Given the Argument: R ⊃ (H • ∼N) / (H

Multiple Choice

Given the argument: R ⊃ (H • ∼N) / (H • ∼B) ⊃ (N ∨ ∼P) / K ⊃ (G • P) // (K • R) ⊃ B
This argument is:

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