Which of the following factors may cause velocity to fluctuate?

I. changes in interest rates
II. changes in expectations about inflation
III. changes in expectations about bond prices
IV. an increase in the number of financial products that affects the demand for money
A) I, II, III, and IV
B) I, II, and III
C) I, III, and IV
D) I and II

Ans: A) I, II, III, and IV