(10 POINTS) CORRECT ONLY WRONG ANSWERS WILL BE REPORTED!!!!!
Which of the sets of ordered pairs represents a function?

A = {(2, βˆ’2), (5, βˆ’5), (βˆ’2, 2), (βˆ’5, 5)}

B = {(4, 2), (4, βˆ’2), (9, 3), (9, βˆ’3)}
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A. Only A

B. Only B

C. Both A and B

D. Neither A nor B