Which of the following is the correct way to call the function MyFun() of the Sample class given below?

class Sample
{
    public int MyFun(int i)
    {
        Console.WriteLine("Welcome to CuriousTab.com !" );
        return 0;
    }
}

int val;
for (val = -5; val <= 5; val++)
{
    switch (val)
    {
        case 0:
            Console.Write ("India"); 
            break;
    }
    
    if (val > 0)
        Console.Write ("B"); 
    else if (val < 0)
        Console.Write ("X");
}

< Serializable() > class sample
{ /* ... */ }

(Serializable()) class sample
{ /* ... */ }

[ Serializable() ] class sample
{ /* ... */ }

Serializablef) class sample
{ /* ... */ }

1. The CLR failed to handle the exception.
2. The class MyProgram belongs to the namespace MyProgram.
3. The function SetVal() was called from Main() in line number 20.
4. The exception occurred in line number 26 in the function SetVal()
5. The runtime exception occurred in the project CuriousTabConsoleApplication.

class Sample
{
    public int MyFun(int i)
    {
        Console.WriteLine("Welcome to CuriousTab.com !" );
        return 0;
    }
}

delegate void del(int i);
Sample s = new Sample();
deld = new del(ref s.MyFun);
d(10);

delegate int del(int i);
Sample s = new Sample(.);
del = new delegate(ref MyFun);
del(10);

Sample s = new Sample();
delegate void del = new delegate(ref MyFun);
del(10);

delegate int del(int i);
del d;
Sample s = new Sample();
d = new del(ref s.MyFun);
d(10);

interface IPerson
{ 
    String FirstName
    { 
        get; 
        set;
    }
    String LastName
    {
        get; 
        set;
    }
    void Print(); 
    void Stock(); 
    int Fun(); 
}

1. Delegates are not type-safe.
2. Delegate is a user-defined type.
3. Only one method can be bound with one delegate object.
4. Delegates can be used to implement callback notification.
5. Delegates permit execution of a method on a secondary thread in an asynchronous manner.

1. Student[3] = 34;

2. Student s = new Student(); 
   s[3] = 34;

3. Student s = new Student(); 
   Console.WriteLine(s[3]);

4. Console.WriteLine(Student[3]);

5. Student.this s = new Student.this(); 
   s[3] = 34;