Question: Let A = {-1, -2, -3, -4} and B = {-3, -4, -5, -6), what is the union of sets A and B? O a)

Let A = {-1, -2, -3, -4} and B = {-3, -4, -5, -6), what is the union of sets A and B? O a) U = {} O b) U = {-3} O c) U = (-4} O d) U = (-3, -4 } O e) U = {-1, -2, -3, -4, -5, -6}

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