Which of the following is correct with regard to the business cycle?

Which of the following is correct with regard to the business cycle?
A) There are no recognizable short-term phases in the business cycle; rather, the cycle can only be recognized as a long-term phenomenon.
B) A recession is usually defined as two consecutive quarters when the economy shrinks.
C) Due to better government management of the economic environment, the business cycle has become less volatile in recent decades.
D) A depression occurs when the trough of the business cycle extends five or more years.
E) All of these are correct.