Question: Let U = { 1 , 2 , 3 } and A , B and C be subsets of U . We want to prove

Let U={1,2,3} and A,B and C be subsets of U. We want to prove that (AB)(C-(AB))=((AB)-C)(C-B) is NOT an identity.
Which one of the following alternatives contains the correct elements for the sets A,B and C to use as a counterexample to prove that the given statement is NOT not an identity.
Let U = { 1 , 2 , 3 } and A , B and C be subsets

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