Shawn graphed the points listed below.

(0, 0) (1, -1) (3, 0) (4, 4) (4, 5) (5, 4) (6, -2)

Which pair of points could be used to show that the points Shawn graphed do not represent a function?

A. (4, 4) and (4, 5)

B. (4, 4) and (5, 4)

C. (0, 0) and (3, 0)

D. (1, -1) and (6, -2)​