Suppose the Income-Consumption Curve for Goods X and Y Is

Multiple Choice

Suppose the income-consumption curve for goods X and Y is upward sloping. If the price of good Y increases and the income-consumption curve rotates in clockwise fashion, then we know that:

A) X and Y are complements.
B) X and Y are both inferior goods.
C) X and Y are substitutes .
D) Y is an inferior good.