Let A = (0, 0, 0, 0) and let # be a binary operation from A X A to A presented by the following table: 0 0 0 ㅁㅁㅁㅁ ㅇ 0 0 00000 Which one of the following statements pertaining to the binary operation # is TRUE? a. is the identity element for #. b. # is symmetric (commutative). c. # is associative. d. [(o # 0) # ] = [0# (0 # *)]

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