Chapter 7 - Part III - Consumers, Producers, and the Efficiency of Markets - Quick Check Multiple Choice - Page 151: 2

A

Since the price of the cookies rises, that means the consumer surplus decreases, so we know it's A or B. The price change is 1 dollar, and the initial quantity is 100, which will go down when the price goes up, so the max consumer surplus change is 100 dollars.