5. Which of the following events would affect the CPI but not the GDP deflator?

a. Boeing, the American airplane manufacturer, raises the price it charges the U.S. Air Force for fighter jets.

b. Volvo, the Swedish auto maker, raises the prices of the cars it sells in the United States.

c. Kellogg’s, the American cereal maker, cuts the price of a box of corn flakes.

d. Barbers around the country raise the prices they charge for haircuts.