Given the Argument: S ≡ (N ∨ H) / S

Multiple Choice

Given the argument: S ≡ (N ∨ H) / S ∨ ∼N // S ⊃ H
This argument is:

A) Invalid; fails in 4^th line.
B) Invalid; fails in 2^nd line.
C) Invalid; fails in 5^th line.
D) Valid.
E) Invalid; fails in 3^rd line.