Which of the following statements are correct? 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 occu

Which of the following statements are correct?

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.