8.

Which relation is a function?



A. {(5, 0), (0, –8), (5, –5)}


B. {(5, 0), (–8, –5), (–8, 5), (–5, –8)}


C. {(5, 0,) (–8, –5)}


D. {(5, 0), (0, 5), (–5, –5)}