Which of the following lists of ordered pairs is a function?
A. (-2, 3), (1,3), (3, 7). (1.4)
B. (3,7), (4, 5), (3, 3)
c. (-1,4), (1,7), (2.10)
D. (1.8), (2,9), (3, 10), (3, 11)​