Each of the following lines from "The Love Song of J. Alfred Prufrock" contains allusion except A. "I am no prophet—and here's no great matter;" B. "To say: I am Lazarus, come from the dead," C. "No! I am not Prince Hamlet, nor was meant to be;" D. "I shall wear white flannel trousers, and walk upon the beach." Read the following lines from "The Love Song of J. Alfred Prufrock."
A, it is informal. She is writing to somebody she personally knows, like her cousin, and doesn't mind if she gets a bad impression from it. Her cousin knows her well enough to not judge her.