Which of the following is used to make an abstract class? Options: A . &nbspDeclaring it abstract using static keyword. B . &nbspDeclaring it abstract using virtual keyword. C . &nbspMaking at least one member function as virtual function. D . &nbspMaking at least one member function as pure virtual function.

Which of the following

Question

Which of the following is used to make an abstract class?

Options:

A . Declaring it abstract using static keyword.

B . Declaring it abstract using virtual keyword.

C . Making at least one member function as virtual function.

D . Making at least one member function as pure virtual function.

Answer: Option D

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