问题如下：
The most likely example of a reversal pattern is:
选项：
A. Rectangle.
B. Flag.
C. Double bottom.
解释：
C is correct.
Double bottom pattern is a reversal pattern for downtrend. Examples of reversal patterns include: head and shoulders, double top and triple top, which are for uptrend. For downtrend, there are inverse head-and shoulders pattern, Double bottom, and triple bottom.
flag就是triangle?
