If we observe that when the price of chocolate increases by 10%, total revenue increases by 10%, then the demand for chocolate is unit price elastic

In the above figure, if a subsidy is granted to producers that generates an efficient allocation of resources, then consumers will pay a price of

A) $20 per unit. B) $15 per unit. C) $10 per unit. D) $5 per unit.

Why would we be likely to observe dentists engaging in price discrimination?

a. Dental care is expensive. b. All dentists are basically alike. c. It is very important to exercise care in choosing a dentist. d. It is nearly impossible to resell the services of a dentist. e. The demand for dentists is very inelastic.