Which of the following are used as indicators of a strong market in the future?
I. The advance-decline spread is increasing at a time when the advances outnumber the declines.
II. The level of short interest is relatively high.
III. The net difference of odd-lot purchases minus odd-lot sales begins increasing.
IV. The trading volume increases in a declining market.
A) I and II only
B) III and IV only
C) I, II and III only
D) I, II, III and IV
Answer: A