When natural resources are commonly owned, the exhaustion of these resources are evenly spread over current and future periods

The data in the table above are the U.S. balance of payments. The capital and financial account balance is

A) $0. B) -$80 billion. C) -$200 billion. D) +$200 billion.

Refer to Table 1-3. What is Santiago's marginal benefit if he decides to stay open for an extra two hours instead of one hour?

A) $40 B) $50 C) $120 D) $190