Given the Following Premises

question 7

Multiple Choice

Given the following premises:
1) C ⊃ (∼L ∨ ∼N)
2) (C • L) ⊃ ∼N
3) N

• A)∼(C • L) 2, 3, MT
• B)(C ⊃ ∼L) ∨ ∼N 1, Assoc
• C)(C ⊃ ∼N) • (L ⊃ ∼N) 2, Dist
• D)C ⊃ ∼N 2, Simp
• E)C ⊃ ∼(L • N) 1, DM