The correct answer is D.
One of the subjects addressed in Scott Fitzgerald's "The Great Gasby" is the rivalry between "Old Money" and "New Money".
"Old Money" were people who had grown up with wealth. They believed they had manners and good taste.
On the other gand, the "New Money" were people that, thanks to the American dream, could amass wealth and climb the social ladder. However, having been low or middle class for most of their lives, they did not abide to the Old Money idea of taste and class.
Another subject touched is stereotypes. In America, class rivalry has always led to the creation of stereotypes. New and Old money is no exception. We can see this trough Tom's point of view that, for Old money, the people that has acquired wealth, must have done so by being "bootleggers".