Suppose the Demand for X Is Given by Q_x^d =

Suppose the demand for X is given by Q_x^d = 100 − 2P_X + 4P_Y + 10M + 2A,where P_X represents the price of good X,P_Y is the price of good Y,M is income and A is the amount of advertising on good X.Based on this information,we know that good Y is

A) a substitute for good X.
B) a complement for good X.
C) an inferior good.
D) a normal good.