One phase of the business cycle is expansion phase...[passage]...Which of the following statements is the best examples of the optimism mentioned in the passage as being part of the expansion phase?
A. As technology advances innovative businesses replace antiquated firms.
B. Full employment is achieved at all levels of the economy
C. Ine prices of agricultural commodities are increased at the producer level.
D. Industrial firms allocate funds for the purchase of machine tools.
