Which of the following "magnet countries" has the largest share of immigrants as a percent of its labor force?

When the price of milk goes up as a result of a rightward shift of the demand curve for milk, the total revenue collected by milk producers will

A) increase only if milk is inelastic in supply. B) decrease only if milk is elastic in supply. C) remain constant only if milk has a unitary price elasticity of supply. D) none of the above

Market supply is found by

A) horizontally summing each individual producer's average total cost curve. B) vertically summing the relevant part of each individual producer's marginal cost curve. C) horizontally summing the relevant part of each individual producer's marginal cost curve. D) vertically summing each individual producer's average total cost curve.