Which of the following lists of ordered pairs is a function?
OA. (2, 5), (3, 6), (6, 9)
B. (1, 2), (4, 0), (3, 5), (4, 3)
C. (-1, 2), (2, 3), (3, 1), (2, 5)
D. (2,5), (3, 6), (2, 1)