The demand for gasoline is perfectly inelastic because most people need gasoline to drive their cars

Consumer surplus is the difference between the maximum amount a buyer is willing to pay for a product and the price he actually pays

Indicate whether the statement is true or false

If a decrease in income leads to an increase in the demand for macaroni, then macaroni is

A) an inferior good. B) a necessity. C) a neutral good. D) a normal good.