Provide answer for the c

Example 1: Suppose there is a market for used cars in which good cars are worth $15,000 to buyers and $14,000 to sellers and okay cars are worth $10,000 to buyers and $9,000 to sellers. Assume the valuations are known to both parties but only the sellers know whether or not their car is good or okay. c. In order to fix the asymmetric information problem, consumers can either choose to screen or to require a signal. Which of these would consumers do