Ebeneezer Scrooge, a character in a novel by Charles Dickens, is stingy with his money even when he sees people in need. Marta refused to loan her brother a quarter to buy a marble he wanted at the thrift shop. "Don't be such a scrooge!" he pleaded. What does the allusion in this sentence show about Marta's brother?

Aman lives on the twelfth floor of an apartment building. every morning he takes the elevator down to the lobby and leaves the building. in the evening, he gets into the elevator, and, if there is someone else in the elevator -- or if it was raining that day -- he goes back to his floor directly. otherwise, he goes to the tenth floor and walks up two flights of stairs to his apartment.