Fluctuations in the growth of real GDP reflect __________. Each __________ has one __________ and one recession phase and __________. After the trough is reached, the economy enters the __________ stage. Once the level of real GDP reaches the previous __________, the economy experiences __________. Group of answer choices business cycles; business cycle; expansion phase; one peak and one trough; recovery; peak; an expansion short-run changes in RGDP and the average level of prices in the economy; business cycle; recovery phase; one peak and one trough; recovery; trough; an expansion b. business cycles; business cycle; expansion phase; one peak and one trough; expansion; level; an economic boom d. None of the above