An autonomous expenditure is one that does not depend on:

Mr. Smith put his laptop up for sale. He is aware of the fact that the laptop malfunctions frequently

However, none of the potential customers who came to buy the laptop were able to discover the problem and one of them actually bought it at a remunerative price. This occurred due to ________. A) the presence of asymmetric information B) the presence of positive externalities C) the presence of negative externalities D) the selective retention of information by sellers

Refer to the figure above. What is the consumer surplus in the market?

A) $60 B) $90 C) $120 D) $160