C#

Which of the following is way to pass parameters by value

______method copies the reference to the memory location of an argument into the formal parameter.

Find the answer: what is recursive method call? Explain with example

_____determines the visibility of a variable or a method from another class

_______is defined 'as the process of enclosing one or more items within a physical or logical package'.

________Abstraction allows making relevant information visible

Encapsulation is implemented by using _________

_________access specifier allows a class to expose its member variables and member functions to other functions and objects.

Write a program to calculate area of circle. The program should consist of two classes and at least one method