The Table Below Shows the Marginal Benefit Per Year (In

The table below shows the marginal benefit per year (in dollars)and the marginal cost per year (in dollars)of hiring additional police officers in a small community. (A)Is the service provided by the police a public good?
(B)Plot the marginal benefit and the marginal cost on a graph,with the number of police officers on the horizontal axis.In this graph,show the optimal number of police officers.
(C)Given the definition of the market demand curve,is the marginal benefit schedule the same as the town's demand curve for police?