Suppose you have the following three sets: A={1,2,3,4,5}, B={3,4,5,6}, and B1={4,5,6}.  If f:A⟶B, where f={(1,3),(2,4),(3,6),(4,5),(5,3)} which set below is f−1(B1)? Group of answer choices {4,5,6} {3,5,6} {2,3,4} {2,5,6}

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A: Since you have asked multiple questions in single request.so we will answering only first question.

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