Assume That Pizza and Hamburgers Are the Only Food Items

Multiple Choice

Assume that pizza and hamburgers are the only food items available to consumers. If the price of pizza increases, other factors constant, then which of the following will definitely happen?

A) Total revenues received by pizza sellers will increase.
B) Total revenues received by pizza sellers will decrease.
C) Total revenues received by hamburger sellers will increase.
D) Total revenues received by hamburger sellers will decrease.