Suppose U = {1, 2, 3, 4, 5, a, b, c) is a universal set with the subset A = {a, b, c, 1, 2, 3, 4). Which one of the following alternatives represents a surjective function from U to A? O a. {(1, 4), (2, b), (3, 3), (4, 3), (5, a),(a, c), (b, 1), (c, b)} O b. {(a, 1), (b, 2), (c, a), (1, 4), (2, b), (3, 3), (4, c)} O c. {(1, a), (2, c), (3, b), (4, 1), (a, c), (b, 2), (c, 3)} O d. {(1, a), (2, b), (3, 4), (4, 3), (5, c), (a, a), (b, 1), (c, 2)}

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