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Given the Argument: H ⊃ G / G ⊃ H

Question 323

Multiple Choice

Given the argument: H ⊃ G / G ⊃ H / H ∨ G // G • H
This argument is:

A) Invalid; fails in 1^st line.
B) Invalid; fails in 6^th line.
C) Invalid; fails in 3^rd line.
D) Valid.
E) Invalid; fails in 4^th line.

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