Declarations and Access Control Logic

Question : 27 of 29

Marks: +1, -0

Which is true?(Choose all that apply.)

"X extends Y" is correct if and only if X is a class and Y is an interface.
"X extends Y" is correct if and only if X is an interface and Y is a class.
"X extends Y" is correct if X and Y are either both classes or both interfaces.
"X extends Y" is correct for all combinations of X and Y being classes and/or interfaces.

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