NO.PZ2018101901000050
问题如下：
An inverse head and shoulders acts as a reversal pattern for a preceding:
选项：
A. uptrend.
B. downtrend.
C. consolidation.
解释：
B is correct.
An inverse head and shoulders is a reversal pattern for a downtrend that preceded the formation of the pattern. An inverse head and shoulders is also referred to as a head and shoulders bottom and signals a potential reversal from the preceding downtrend to an uptrend. An inverse head and shoulders is the opposite of a head and shoulders pattern that signals a reversal from a preceding uptrend to a downtrend.
题目意思没看懂，请解释一下题目与解析
