问题如下：
Which of following is least likely the limitation of technical analysis?
选项：
A. It requires detailed knowledge to analyze the financial asset.
B. It does not work in a markets where price and volume data cannot reflect supply and demand.
C. It identifies a change in trends after they are recognizable.
解释：
A is correct.
The advantage of technical analysis is only using actual price and volume data. Thus, investors do not need to know lots of the detail knowledge of the financial asset under analysis.
When price and volume data cannot fully reflect supply and demand, it is difficult to use the technical analysis. Furthermore, trends are generally identified after they are formed, that is another limitation for technical analysis.
请问C选项是什么意思呢
