Suppose That a Consumer's Preferences Are Well Behaved in That

Multiple Choice

Suppose that a consumer's preferences are well behaved in that properties 4-1 - 4-4 are satisfied and the initial equilibrium consumption bundle consists of 10 units of X and 25 units of Y.If P_Y increases such that the new equilibrium consumption bundle is 15 units of X and 10 units of Y, then goods X and Y are

A) complements.
B) substitutes.
C) normal goods.
D) unrelated.