Q31
Which is true?
A.
"X extends Y" is correct if and only if X is a class and Y is an interface
B.
"X extends Y" is correct if and only if X is an interface and Y is a class
C.
"X extends Y" is correct if X and Y are either both classes or both interfaces
AnswerD.
"X extends Y" is correct for all combinations of X and Y being classes and/or interfaces
Answer: Option C
Solution
Answer: Option C
Solution:
A is incorrect because classes implement interfaces, they don't extend them. B is incorrect because interfaces only "inherit from" other interfaces. D is incorrect based on the preceding rules.