A 10 Percent Increase in Income Leads to a 15

Multiple Choice

A 10 percent increase in income leads to a 15 percent decrease in the quantity of macaroni and cheese demanded but no change in the price of macaroni and cheese. What can we conclude from this information?

A) Macaroni is an inferior good and price elasticity of demand is less than one.
B) Macaroni is a normal good and price elasticity of demand is greater than one.
C) Macaroni is an inferior good and price elasticity of supply is equal to zero.
D) Macaroni is an inferior good and price elasticity of supply is infinite.