Which of the following sets of ordered pairs represents a function?A. {(4, 1), (-
11, -1), (8, 2), (-1 -2), (9, 4), (-2, -10)}
B. {(-2, -1), (-2, 5), (7, 8), (-2, 5), (3, 9), (-3, 1)}
C. {(8, 2), (6, -2), (7, 4), (-11, -4), (8, 3), (-9, 5)}
D.{(2, 4), (-1, -1), (7, 2), (-1, -2), (6, 3), (2, -9)}