Which type of industry is likely to see more intraindustry trade?

Following the balance of payments ________.

A. allows us to track changes in trade flows, but not financial assets B. is useful for understanding a country's relationships with its trading partners C. is not helpful because the balance of payments is always zero D. helps predict when an economy will be in a recession

Referring to Figure 1.4, the opportunity cost of producing the second unit of pizza is 

A. the same as the opportunity cost of producing the first unit of pizza. B. six units of soda. C. three units of soda. D. one unit of soda.