All Else Equal, When the Price of Gasoline Falls, Brian

Multiple Choice

All else equal, when the price of gasoline falls, Brian purchases more gasoline and less candy. For Brian, we can definitely say that candy:

A) is an inferior good but gasoline could be normal or inferior.
B) is a normal good but gasoline could be normal or inferior.
C) is a normal good and gasoline is a normal good.
D) could be normal or inferior good and gasoline is a normal good.