Which of the following statements are correct?

1. All operators in C#.NET can be overloaded.
2. We can use the new modifier to modify a nested type if the nested type is hiding another type.
3. In case of operator overloading all parameters must be of the different type than the class or struct that declares the operator.
4. Method overloading is used to create several methods with the same name that performs similar tasks on similar data types.
5. Operator overloading permits the use of symbols to represent computations for a type.

1. A class can implement multiple interfaces.
2. Structures cannot inherit a class but can implement an interface.
3. In C#.NET, : is used to signify that a class member implements a specific interface.
4. An interface can implement multiple classes.
5. The static attribute can be used with a method that implements an interface declaration.

1. Data
2. Class
3. Enum
4. Structure
5. Namespace

namespace CuriousTabConsoleApplication
{ 
    class SampleProgram
    { 
        static void Main(string[] args)
        { 
            int[]arr = newint[]{ 1, 2, 3, 4, 5 }; 
            fun(ref arr);
        }
        static void fun(ref int[] a)
        { 
            for (int i = 0; i < a.Length; i++)
            { 
                a[i] = a[i] * 5; 
                Console.Write(a[ i ] + " "); 
            } 
        } 
    } 
}

struct Emp
{
    public String name;
    public int age;
    public Single sal; 
}
Emp e = new Emp();

e.name = "Amol"; 
e.age = 25; 
e.sal = 5500;

With e
{
    .name = "Amol";
    .age = 25;
    .sal = 5500; 
}

With emp e
{
    .name = "Amol";
    .age = 25;
    .sal = 5500; 
}

e -> name = "Amol"; 
e -> age = 25;
e -> sal = 5500;

name = "Amol"; 
age = 25;
sal = 5500;

int[ , ] intMyArr = {{7, 1, 3}, {2, 9, 6}};

1. intMyArr represents rectangular array of 2 rows and 3 columns.
2. intMyArr.GetUpperBound(1) will yield 2.
3. intMyArr.Length will yield 24.
4. intMyArr represents 1-D array of 5 integers.
5. intMyArr.GetUpperBound(0) will yield 2.