Which set of ordered pairs represents a function?


A) {(0, 0), (2, 3), (1, -4), (2, -2)}


B) {(5, 6), (2, 6), (-3, 4), (-1, 4)}


C) {(3, -2), (-4, -1), (0, 3), (0, 5)}


D) {(-5, 1), (-4, 2), (-5, 3), (-4, 4)}