Which of the following statements are propositions? State true or false. a. The discrete structure implements set theory, relations, and functions to solve computer science problems. b. In computer science, the Boolean data type defines 0 = false and 1 - true. c. Let A and B be the subsets of U. A U (A n B) = A can be proved by distributive, idempotent, and commutative laws. d. a- 2a +1 =0 e. a-b-0

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