Consider the proposition: ~(S<->(P→S)) Which of the following options is not…

Answer: A. It is a tautology; C. It is a contradiction; D. Can’t be determined

1. A.

   It is a tautology

2. B.

   It is a contingency

3. C.

   It is a contradiction

4. D.

   Can’t be determined

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Correct answer: A, C, D