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1 a ⊃ B
2 $\lor$ B
C) (B $\lor$

Question 55

Multiple Choice

1. A ⊃ B
2. B ⊃ (C ⊃ D)
3. A • C
4. ∼D
-Which of the following propositions is an immediate (one-step) consequence in PL of the given premises?

A) ∼B ⊃ A
B) A $\lor$ B
C) (B $\lor$ C) ⊃ D
D) C • A
E) ∼A

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