-The Above Figure Shows the Marginal Social Benefit, Marginal Private

Multiple Choice

-The above figure shows the marginal social benefit, marginal private cost and marginal social cost of producing steel. If the market is competitive and unregulated, the equilibrium quantity of steel is ________ tons and the efficient quantity of steel is ________ tons.

A) 2; 2
B) 2; 4
C) 4; 2
D) None of the above answers is correct.