The National Park Service (NPS) grants a single firm the right to sell food and other goods in Yosemite National Park. In return, the NPS receives a fraction of the firm’s profits. Discuss the trade-offs of this policy. (ie. What are the pros and cons of this policy? How do the outcomes of this policy compare to a policy where several firms were allowed to sell food in Yosemite?). Make sure you use discussion about market structures in your answer.