How can we make a class abstract? Options: A . &nbspBy making all member functions constant. B . &nbspBy making at least one member function as pure virtual function. C . &nbspBy declaring it abstract using the static keyword. D . &nbspBy declaring it abstract using the virtual keyword.

How can we make a clas

Question

How can we make a class abstract?

Options:

A . By making all member functions constant.

B . By making at least one member function as pure virtual function.

C . By declaring it abstract using the static keyword.

D . By declaring it abstract using the virtual keyword.

Answer: Option B

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