Which set of ordered pairs represents a function?
OA. ((0,5), (2, 5), (4, 5), (6, 5), (8,5)}
OB. ((3, 1), (3, 2), (3, 3), (3, 4), (3, 5))
OC. {(1,4), (2, 4), (3, 4), (4, 3), (4, 2))
OD. {(2, 3), (3, 4), (4, 3), (3, 2), (2, 1))
The correct answer is A.