can't understand question no 3/4 ch- inheritance.Can anyone out there to help me?

Answer 1

class C inherits from class B so it us class B's definition of function a.

In this line:
c = C()

C() creates an object of type C which is then assigned to the variable c.

In this line:
c.a()

This object stored in c calls the method a(), the one that was defined in class B because class C inherits from class B.

Answer 2

Sorry, I meant to say uses not *us* in the first line of my first comment.

Answer 3

@ Brian: but method in class B is derived from class A. So why isn't the answer 1?

Answer 4

When a class that inheirits from another class with the same functions, the functions that are newer are kept.

Answer 5

thanks everyone😃
it seems a bit clearer than before