Suppose That the Market Demand Curve for Cauliflower Is a Function

Multiple Choice

Suppose that the market demand curve for cauliflower is a function of the price of cauliflower, the price of broccoli, and income. If the partial derivative of quantity demanded of cauliflower with respect to income is positive,:

A) neither cauliflower nor broccoli is a normal good.
B) cauliflower and broccoli are both normal goods.
C) broccoli is a normal good.
D) cauliflower is a normal good.