The Difference Between Normal and Inferior Goods Is That

The difference between normal and inferior goods is that

A) an increase in price will shift the demand curve for a normal good rightward and the demand curve for an inferior good leftward.
B) if the price of a normal good increases, individuals who buy it are poorer; for inferior goods, the opposite is true.
C) an inferior good is something that will not be demanded until quantities of the normal good have been exhausted.
D) an increase in income will shift the demand curve for a normal good rightward and the demand curve for an inferior good leftward.