Casino X advertises that it has the most “free” slot machines for one dollar in the city, which means that the statistical chances of winning money by playing a slot machine for one dollar at Casino X are higher than at any other casino. Meanwhile, Casino Y claims that it has the most free slot machines for five dollars in the city. In any case, the statistical odds are always against any slot machine player. Elaine has five dollars that she can spend on gambling, and she decided to play a five-dollar slot machine at Casino Y.

Assuming that Elaine hopes to win money, which of the following, if true, is the most convincing proof that she made the right decision about how to play for her money?


(A) The total income of Casino Y from gambling is much higher than the income of Casino X.

(B) At Casino Y, more players win money by playing slot machines than in any other casino game.

(C) One of the two casinos provides accurate information about their slot machines, but the other casino does not.

(D) Each of the two casinos has slot machines of both types: one-dollar and five-dollar.

(E) Casino X and Casino Y are the only two casinos in the city that claim to have the most free slot machines of any type.