Question: answer S = {((a, b), (c, d) ) E Z2 x Z2 : ad = cb} Which pairs of elements are in the relation? Choose

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S = {((a, b), (c, d) ) E Z2 x Z2 : ad = cb} Which pairs of elements are in the relation? Choose all that apply. Content O (0, 0) (0, 0), (0, 1) O (a, b), (a, b) for all integers a, b (a, b), (b, a) for all integers a, b

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