Which set of ordered pairs in the form of (x, y) does not represent a function of X? A
{(0, 0), (2, 4), (2, 4);
B
{(3, 7), (1,5), (-3, 7)}
C С
{(3, 7), (3, 1), (3, -1)}
D
{(3, 7), (0, 7), (1, 7)}