I believe it is A, although i'm not 100% sure. Hope I helped:)
In Tim O'Briens chapter good form, the narrator says he wants his readers to feel WHAT HE FELT.
Even though I haven't read the whole story, I think he is using the first person point of view in telling his story. This is because in using the first person point of view, readers will be able to put themselves in the narrator's shoes and experience what is happening in the story.
