Determine Whether the Given Proposition Is a Logical Truth or Not

question 11

Multiple Choice

determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
-[(P • Q) ≡ (R $\lor$ S) ] ⊃ [(P • ∼R) ⊃ S]

• A) Logical truth
• B) Not a logical truth. False valuation when P, Q, and R are true and S is false
• C) Not a logical truth. False valuation when P is true and Q, R, and S are false
• D) Not a logical truth. False valuation when P and Q are true and R and S are false
• E) Not a logical truth. False valuation when Q is true and P, R, and S are false

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