1. A group of 100 residents in a small community have decided to pay for a local police force. Each resident has the same marginal valuation schedule for intensity of police protection per day which is defined in terms of the number of police officers on duty Q as MV(Q) = 30 - 40. The protection is a public good and it costs $200 per police officer per day. (a) What number of police officers is efficient? (b) Explain why this level of protection might not be provided in a competitive market