Consider the sentence "In the universe of integers, for each integer x there is another integer y such that the sum of x and y is 0". Its symbolic translation is a. (Vx) (Vy) (x + y = 0) (Z is a universe) b. (3x) (y) (x + y = 0) c. (Va) (y) (x + y = 0) d. (3x) (Vy) (x + y = 0) O O a. b. C. d. (Z is a universe) (Z is a universe) (Z is a universe)

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