In the absence of trade, Canada’s equilibrium price and quantity equal ?

A. there are no benefits to the public since a public good is not excludable
B. the benefits are infinite because a public good is not rival and an infinite amount of people can consume it at the same time
C. one can never place a value on human life or the environment
D. respondents to naires have little incentive to tell the truth.

A. government regulation
B. that prices are not low enough so firms over produce
C. that prices are not high enough, so people overconsume
D. that property rights have not been well established