Gasoline Prices Increase by 50 Percent and Other Things Remain

Gasoline prices increase by 50 percent and other things remain the same. As a result, there is

A) an increase in the demand for gasoline.
B) a decrease in the quantity of gasoline demanded.
C) a decrease in the demand for gasoline.
D) no change in the quantity of gasoline demanded.
E) More information is needed to determine if the demand for gasoline increases or decreases.