Given the Argument: (A • B) ≡ (C ∨ D)

question 118

Multiple Choice

Given the argument: (A • B) ≡ (C ∨ D) / A ⊃ E / B ⊃ F // C ⊃ (E • F) .
This argument is:

• A) Cogent.
• B) Invalid.
• C) Sound.
• D) Valid.
• E) Uncogent.

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