Q. Which of the following class definitions defines a legal abstract class?
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(A)
class A { abstract void unfinished() { } }
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(B)
class A { abstract void unfinished(); }
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(C)
abstract class A { abstract void unfinished(); }
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(D)
public class abstract A { abstract void unfinished(); }
✅ Correct Answer: (C)
abstract class A { abstract void unfinished(); }