Refer to the Information Provided in Figure 3

Refer to the information provided in Figure 3.7 below to answer the following questions. Figure 3.7
-Refer to Figure 3.7. A movement from Point C to Point B on demand curve D2 would be caused by a(n)

A) decrease in income, assuming pizza is a normal good.
B) decrease in the price of hamburgers, assuming that pizza and hamburgers are substitutes.
C) decrease in the price of pizza.
D) increase in the price of pizza.