Peanut butter is an inferior good.If there is an increase in income,total surplus in the peanut butter market:

A) will increase.
B) will decrease.
C) will not change.
D) may change,but we cannot determine the change without more information.

Total Surplus

The sum of consumer surplus and producer surplus, representing the total benefit to society from the production and consumption of goods or services.

Inferior Good

A type of good for which demand decreases as the income of the consumer increases, opposite to a normal good.