Which set of ordered pairs does not represent a function? A. (7, 8), (-4, 4), (3, 8), (-7, -1) B.(-5, -3), (-1, -8), (-7, 0), (-5, -9 C.(8, 4), (6, -1), (-4, 5), (9, 4) D.(8, -3), (4, 0), (-4, 9), (3, 2)