If the Marginal Utility You Derived from the Last Video

Multiple Choice

If the marginal utility you derived from the last video game you played was 50 cents and the game costs 50 cents to play,

A) you have been playing the game too long.
B) you haven't been playing the game long enough.
C) you have maximized your total utility.
D) there is no way to determine whether you have played the game long enough.