Mica Goes Swimming Only If Nicole Lifeguards $\lor$ O
∼N / P

Multiple Choice

Mica goes swimming only if Nicole lifeguards. Pedro is free on the condition that Ona goes to the beach. Mica goes swimming unless Ona goes to the beach. Nicole doesn't lifeguard. So, either Pedro is free or Mica goes swimming.
-Which of the following is the best translation into PL of this argument?

A) N ⊃ M P ⊃ O
M $\lor$ O
∼N / P $\lor$ M
B) N ⊃ M O ⊃ P
M $\lor$ O
∼N / P $\lor$ M
C) M ⊃ N P ⊃ O
M $\lor$ O
∼N / P $\lor$ M
D) M ⊃ N
O ⊃ P
M $\lor$ O
∼N / P $\lor$ M
E) M ≡ N P ⊃ O
M $\lor$ O
∼N / P $\lor$ M