Which of the following relations is a function?

OA. (9,-10).(-8, 7), (9,6), (-8, 12)

OB. (-8, 0), (-1,5). (-8, -3), (5,9)

OC. (-1,-2), (-8,-5), (5,8). (5,2)

OD. (-8,2).(-1,3), (5,7), (9,2)​