Which of the following statements accurately describe the phases of a business cycle?
A. A contraction phase is when an economy exhibits decreasing levels of production and consumption.
B. A period of expansion is when an economy exhibits decreasing levels of production and spending.
C. A trough occurs at the end of the contraction phase and the beginning of the expansion phase
D. A peak level of business activity occurs at the end of the expansion phase and the beginning of the contraction phase.