Question

Which of the following definitions of abstract classes are correct in C#?

Cosmo · Accepted Answer

According to abstract class definition it is impossible to instantiate an object of an abstract class.
Abstract class can contain both abstract and virtual members - this is not forbidden.

Cosmo · Accepted Answer

An object of an abstract class cannot be instantiated

Cosmo · Accepted Answer

Abstract class can contain both abstract and virtual members in it

Cosmo · Answer

Abstract classes can not inherit from interfaces

Cosmo · Answer

Abstract classes cannot be inherited from

Cosmo · Answer

Fields cannot be defined within an abstract class

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