Which of the Following Factors Does Not Help Explain the Instability

Multiple Choice

Which of the following factors does not help explain the instability of investment?

A) Business expectations can quickly change for unpredictable reasons.
B) Innovations in the economy occur quite irregularly.
C) Profits of firms are highly variable from one period to the next.
D) Purchases of capital goods are usually nondiscretionary and cannot be postponed.