Which is true?

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Question:
Which is true?

1."X extends Y" is correct for all combinations of X and Y being classes and/or interfaces

2."X extends Y" is correct if X and Y are either both classes or both interfaces

3."X extends Y" is correct if and only if X is a class and Y is an interface

4."X extends Y" is correct if and only if X is an interface and Y is a class

Posted Date:-2021-10-25 05:37:20

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