You can spend $10 for lunch and you would like to purchase two cheeseburgers. When you get to the restaurant, you find out the price for cheeseburger has increased from $5 to $6, so you decide to purchase just one cheeseburger. This is best described as:
Α. the substitution effect of a price change
B. the income effect of a price change
C. a decrease in the buyer's reservation price.
D. an increase in the buyer's reservation price.

income effect of a price change.

Explanation: The income effect is known as the effect on real income when price changes, it can however be positive or negative. The income effect expresses the impact of increased purchasing power on consumption.

In this scenario, spending $10 for lunch, and you would like to purchase two cheeseburgers. When you get to the restaurant, you find out the price for cheeseburger has increased from $5 to $6, so you decide to purchase just one cheeseburger, this scenario best illustrates the income effect of a price change.