21) The moving average generates buy signal(s) A) on days 5, 9, and 13 B) on days 3, 11, and 15 C) on days 2 and 16 D) on no days Prices with 5-day moving average line 16 14 12 10 8 6 -Price -5-Day Moving Average 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21