Indicate whether each of the following statements applies to microeconomics or macroeconomics:

a. The unemployment rate in the United States was 3.7 percent in December 2018.

b. A U.S. software firm laid off 15 workers last month and transferred the work to India.

c. An unexpected freeze in central Florida reduced the citrus crop and caused the price of oranges to rise.

d. U.S. output, adjusted for inflation, increased by 2.3 percent in 2017.

e. Last week Wells Fargo Bank lowered its interest rate on business loans by one-half of 1 percentage point.

f. The consumer price index rose by 2.2 percent from November 2017 to November 2018.