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Determine Whether the Given Proposition Is a Logical Truth or Not

Question 9

Multiple Choice

determine whether the given proposition is a logical truth or not. If it is not a logical truth, select a false valuation.
-[(A \lor B) \lor (C \lor D) ] ⊃ [∼(∼C ⊃ D) ⊃ (A ⊃ ∼B) ]


A) Logical truth
B) Not a logical truth. False valuation when all atomic propositions are true
C) Not a logical truth. False valuation when A and C are true and B and D are false
D) Not a logical truth. False valuation when A and B are true and C and D are false
E) Not a logical truth. False valuation when all atomic propositions are false

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