If Goods X and Y Are Substitute Goods, Then an Increase

Multiple Choice

If goods X and Y are substitute goods, then an increase in the price of Y, other things being equal,

A) results in a decrease in the amounts of both X and Y consumed.
B) decreases the quantity demanded of Y, but has no effect on the amount of X consumed.
C) results in a decrease in the quantity of Y consumed, but increases the demand for X.
D) has no real effect on the quantity demanded of good Y, but increases the demand for X.