What does Rainsford's repetition of the word "nerve" in paragraph 169, paragraph 179, and paragraph 197 reveal about his character?

A. Rainsford's repetition characterizes him as forgetful and blundering, which is why he must repeat the word to remember his mission.

B. Rainsford's repetition shows that it is his courage and ability to reason that enables him to survive.

C. Rainsford's repetition was probably taught to him in a private school growing up and is a symbol of his class status.

D. Rainsford's repetition shows just how scared and cowardly he is, suggesting that he will not survive this hunt.