10.
Which relation is a function?


A. {(–2, –12), (–2, 0), (–2, 4), (–2, 11)}

B. {(0, 1), (0, 2), (1, 2), (1, 3)}

C. {(–4, –6), (–3, –2), (1, –2), (1, 0)}

D. {(8, 1), (4, 1), (0, 1), (–15, 1)}