NO.PZ2018101901000051
问题如下：
A fully formed head and shoulders pattern is most likely an indicator to:
选项：
A.
buy.
B.
sell.
C.
hold.
解释：
B is correct.
A head and shoulders formation is a sell indicator that signals a reversal of a preceding uptrend. Once the head and shoulders pattern forms, the expectation is that the price will decline through the neckline price, setting the stage for a downtrend phase.
頭肩的形態漲跌都有，為啥這裡是sell呢
