Which of the following topics are more likely to be studied by a macroeconomist than by a microeconomist?
O how consumers maximize utility, and how prices are established in markets for agricultural products
O the effect of taxes on the prices of airline tickets, and the profitability of automobile-manufacturing firms
O the price of beef, and wage differences between genders
O the percentage of a country's labor force that is out of work, and differences in average income from country to country
