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Which one of the following operations on...

Which one of the following operations on sets is not correa where B' denotes the complement of B? a)`(B'-A')U(A'-B')=(AUB)-(AnnB)` b)`(A-B)U(B-A)=(A'UB')-(A'nnB') c)`(B'-A')n(A'-B')=(B-A)nn(A-B)` d)`(B'-A')n(A'-B')=(B-A')U(A'-B)`

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