Which of the following statements are correct about the this reference?

1. this reference can be modified in the instance member function of a class.
2. Static functions of a class never receive the this reference.
3. Instance member functions of a class always receive a this reference.
4. this reference continues to exist even after control returns from an instance member function.
5. While calling an instance member function we are not required to pass the this reference explicitly.

1. Instance members of a class can be accessed only through an object of that class.
2. A class can contain only instance data and instance member function.
3. All objects created from a class will occupy equal number of bytes in memory.
4. A class can contain Friend functions.
5. A class is a blueprint or a template according to which objects are created.

class Student s1, s2; // Here 'Student' is a user-defined class.
s1 = new Student(); 
s2 = new Student();

namespace CuriousTabConsoleApplication
{ 
    class Sample
    { 
        int i; 
        Single j; 
        public void SetData(int i, Single j)
        { 
            this.i = i; 
            this.j = j;
        }
        public void Display()
        { 
            Console.WriteLine(i + " " + j);
        } 
    } 
    class MyProgram
    { 
        static void Main(string[ ] args)
        {
            Sample s1 = new Sample(); 
            s1.SetData(36, 5.4f); 
            s1.Display(); 
        } 
    } 
}

sample c;
c = new sample();

1. It will create an object called sample.
2. It will create a nameless object of the type sample.
3. It will create an object of the type sample on the stack.
4. It will create a reference c on the stack and an object of the type sample on the heap.
5. It will create an object of the type sample either on the heap or on the stack depending on the size of the object.

namespace CuriousTabConsoleApplication
{ 
    class Sample
    { 
        int i; 
        Single j; 
        public void SetData(int i, Single j)
        { 
            i = i;
            j = j;
        }
        public void Display()
        { 
            Console.WriteLine(i + " " + j);
        } 
    } 
    class MyProgram
    { 
        static void Main(string[ ] args)
        { 
            Sample s1 = new Sample();
            s1.SetData(10, 5.4f); 
            s1.Display(); 
        } 
    } 
}

namespace CuriousTabConsoleApplication
{ 
    class Baseclass
    { 
        public void fun()
        { 
            Console.Write("Base class" + " ");
        } 
    } 
    class Derived1: Baseclass
    { 
        new void fun()
        {
            Console.Write("Derived1 class" + " "); 
        } 
    } 
    class Derived2: Derived1
    { 
        new void fun()
        { 
            Console.Write("Derived2 class" + " ");
        }
    }
    class Program
    { 
        public static void Main(string[ ] args)
        { 
            Derived2 d = new Derived2(); 
            d.fun(); 
        } 
    } 
}

1. Inheritance
2. Encapsulation
3. Templates
4. Containership
5. Polymorphism

class BaseClass
{
    protected int i = 13;
}
class Derived: BaseClass
{
    int i = 9; 
    public void fun()
    {
        // [*** Add statement here ***]
    } 
}