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The statement (~P<->Q)∧~Q is true when?

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The statement (~P<->Q)∧~Q is true when?

(a) P: True  Q: False

(b) P: True Q: True

(c) P: False Q: True

(d) P: False Q: False

I had been asked this question in an online interview.

This key question is from Logics topic in division The Foundation: Logics and Proofs of Discrete Mathematics

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The correct option is (a) P: True  Q: False

The best explanation: For a bi-conditional to be true both inputs should be same.

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