Question

Which set of ordered pairs represents a function?
O
A. {(3, 1), (3, 2), (3, 3), (3, 4), (3,5)}
B. {(2, 3), (3, 4), (4, 3), (3, 2), (2, 1)}
O C. {(0, 5), (2, 5), (4, 5), (6, 5), (8, 5)}
O D. {(1,4), (2, 4), (3, 4), (4, 3), (4, 2)}