When a country starts exporting a good, there is no change in the surplus enjoyed by the domestic consumers of the good

Which of the following is true about average fixed cost?

a. Average fixed cost has a U-shape, and marginal cost crosses average fixed cost at its minimum point. b. Average fixed cost does not vary as output increases. c. Average fixed cost is the difference between marginal cost and average total cost. d. Average fixed cost is total fixed cost divided by the quantity of output produced, and it declines steadily as output increases.

Sam's income elasticity of demand for Product A is 1.15, while his income elasticity of demand for Product B is –1.15 . Given these values, what will happen to Sam's consumption of Products A and B if his income increases by 12 percent? a. Sam's consumption of Product A will fall, while his consumption of Product B will rise

b. Sam's consumption of Product A will rise, while his consumption of Product B will fall. c. Sam's consumption of Product A will fall, while his consumption of Product B will remain the same. d. Sam's consumption of Product A will remain the same, while his consumption of Product B will fall.