If A and C are nonempty classes, prove that AC B and C C D if and only if AxC C BxD.

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A: A. False B. True C. False D. True E. True the explanation was given below please check

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Q: Write a logically equivalent statement for C,D and E

A: We use logical equivalences.

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A: (i). We consider the set which has bounded above but not bounded below

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A: Follow the steps.

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