C-01-Q022mediumsingle_mcqTwo sets AAA and BBB are equal if and only if:aA⊂BA \subset BA⊂BbB⊂AB \subset AB⊂AcA⊂BA \subset BA⊂B and B⊂AB \subset AB⊂Adn(A)=n(B)n(A) = n(B)n(A)=n(B)