Need help with a commonlit answers, (The wild dog of caucomgomoc)

answer: "the beating heart symbolizes the narrator's conscience, or his sense of guilt and wrongdoing" so its b

explanation:

"to look at him, or hear him describe it, he had no guilt. however, poe decided to symbolize this man's subconscious guilt through the heartbeat."

b b b b b b   b b b   b b b b b

where are the options? i can try to if you add them : )

i think it is b. hope this !