If a 10-year Treasury bond pays 1.5% and a 10-year corporate bond pays 6.0%, what is the interest rate spread on this particular corporate bond?

Let's assume producers in Canada can make 200 units of beef or 50 units of oranges, and U.S. producers can make 50 units of beef or 200 units of oranges per time period. Which country faces the lowest opportunity cost of producing oranges?

A) The U.S. B) Canada C) Both countries D) Neither country

Which point or output-combination in the above graph could the nation produce only if it experienced inefficiency?

a. Combination F b. Combination E c. Combination C d. Combination G