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Which one of the following operations on...

Which one of the following operations on sets is not correct where `B'` denotes the complement of `B`?
A. `(B'-A')uu(A'-B')=(AuuB)-(AnnB)`
B. `(A-B)uu(B-A)=(A'uuB')-(A'nnB')`
C. `(B'-A')nn(A'-B')=(B-A)nn(A-B)`
D. `(B'-A')nn(A'-B')=(B-A')uu(A'-B)`
ANSWER : C

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