Select the sentence below that uses proper punctuation to separate a nonessential phrase from the main sentence. a. pocahontas saw a man with yellow hair walking through the forest — a sight she had never seen before — so she followed him. b. pocahontas saw a man — with yellow hair — walking through the forest a sight she had never seen before so she followed him. c. pocahontas saw a man with yellow hair — walking through the forest — a sight she had never seen before so she followed him. d. pocahontas saw a man with yellow hair walking through the forest a sight she had never seen before — so she followed him.