A college has found that some of its graduating students accept offers from Amazon that pay less than offers at other companies. Which of the following is the most likely explanation for this scenario?
A) Employees at Amazon do not value salary as much as employees at other companies.
B) Employees at Amazon are less qualified than ones at other companies.
C) Amazon has been able to lower some of its employees' WTS for their labor.
D) Amazon has a lower WTP for employees.

Which of the following statements is (are) true? i. free entry to a perfectly competitive industry results in the industry's firms earning zero economic profit in the long run, except for the most efficient producers, who may earn economic rent. ii. in a perfectly competitive market, long-run equilibrium is characterized by lmc < p < latc. iii. if a competitive industry is in long-run equilibrium, a decrease in demand causes firms to earn negative profit because the market price will fall below average total cost.