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Question

What is an abstract class?

a.

A class that has direct instances, but whose descendants may have direct instances

b.

A class that has direct instances, but whose descendants may not have direct instances

c.

A class that has no direct instances, but whose descendants may have direct instances

d.

All of the mentioned

Posted under Software Design Concepts Software Engineering

Answer: (c).A class that has no direct instances, but whose descendants may have direct instances

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