The answer in B. "A band of angels coming after me."
The main theme is the fragility of sanity, guilt versus innocence, and the unrelenting passage of time. The fragility of sanity: the narrator's attempt to prove his sanity, his erratic mannerisms while he explains his meticulous plans for killing the old man only prove his madness.
The answer would be B, as symbols can have different meanings based on culture and interpretation. Have a nice day! :)
