Please explain your answer and provide support to correspond it, as I have had an issue with wrong answers before. Thank you!

At point A, B, C and D, what should we do? The chart shows the recent Bank of America stock price. BAC 284 BOLLINGER BANOS IC202MAY X YA 3400 that the 31.14 ha utyling 3000 4/1404 19 13/2014 2900 *10,000,0,1), pomery 2800 2700 2600 At point A, in an upward trend, we should avoid taking short positions. Though the price goes through the upper bound of the BB, we should not take action; at point B, there is no significant trend. The BB is rather flat. The price is A touching the lower bound and we should take a long position; at point C, there is no significant trend. The BB is rather flat. The price is touching the upper bound and we should take a short position; at point D, in a downward trend, when the price is touching the moving average line or even the upper bound, we should take a short position. At point A, in an upward trend, we should avoid taking short positions. Though the price goes through the upper bound of the BB, we should not take action; at point B, there is no significant trend. The BB is rather flat. We should B not take action; at point C, there is no significant trend. The BB is rather flat. We should not take action; at point D, in a downward trend, when the price is touching the moving average line or even the upper bound, so we should not take action. At point A, in an upward trend, we should avoid taking short positions. Though the price goes through the upper bound of the BB, we should not take action; at point B, there is no significant trend. The BB is rather flat. We should not take action; at point C, there is no significant trend. The BB is rather flat. We should not take action; at point D, in a downward trend, when the price is touching the moving average line or even the upper bound, we should take a short position