Long Beach Island, Off the Coast of New Jersey, Is

Long Beach Island, off the coast of New Jersey, is considering building a system of satellite towers that will enhance communication during emergencies such as hurricanes. The efficient quantity of satellite towers is definitely the quantity of such that the

A) marginal social cost is equal to the marginal social benefit.
B) marginal private cost is equal to the marginal social benefit.
C) marginal social cost is less than the marginal social benefit.
D) marginal private cost is less than the marginal social benefit.