1.

Suppose that H be an X-set and suppose that a∼b and |Xa|=|Xb|, the which of the following is true?

A. Xa is powerset of Xb
B. Xa is isomorphic to Xb
C. Xa is homomorphic to Xb
D. Xb is the subset of Xa
Answer» C. Xa is homomorphic to Xb


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