Q34
Which of the following statements regarding abstract classes are true?
A.
An abstract class can be extended.
B.
A subclass of a non-abstract superclass can be abstract.
C.
A subclass can override a concrete method in a superclass to declare it abstract.
D.
An abstract class can be used as a data type.
E.
All of the above
AnswerAnswer: Option E
Solution
Answer: Option E
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