maddymcg408 maddymcg408 03-02-2021 Mathematics contestada 7. GradPoint Which relation is a function? A. {(1, 4), (1, 3), (1, 2), (1, 1)} B. {(3, 4), (3, 3), (1, 2), (1, 5)} C. {(3, 4), (2, 4), (5, 1), (3, 5)} D. {(1, 3), (2, 6), (3, 9), (4, 12)}