Question 3 What is the quantity that the market will privately produce? O a. Q =5 O b. Q = 10 O c. Q = 15 O d. Q = 20 D Question 4 What is the optimal Pigouvian tax? O a. t = 5 O b. t = 10 O c. t = 15 O d. t = 20D For questions 2-4, consider the following market for copper extraction, where the quantity is Q. The marginal benefit is MB = 50 - 2Q. The private marginal cost is PMC = 5 + Q. The social marginal cost is SMC = 10 + 2Q. D Question 2 1 pts What is the socially optimal quantity? O a. Q =5 O b. Q = 10 O G. Q = 15 O d. Q = 20