不理解这个解释？可否介绍一下。

问题如下：

A technical analyst following a bottom-up investing approach focusing on momentum and breakout strategies should favor long positions in stocks with:

选项：

A.shorter consolidation periods. B.high Bollinger Band readings. C.low volatility prior to an upside breakout.

解释：

Securities that break out from low-volatility conditions are likely to experience high volatility, and high volatility in the direction of an existing trend will usually help the trend pick up momentum. Breakouts from consolidation periods in an uptrend or entering an uptrend are usually followed by a continuation of the existing trend.