问题如下：
Which of the following statement regarding tactical asset allocation (TAA) is correct?
选项：
A. TAA is short-term deviation from strategic asset allocation in order to seek and capture return opportunities.
B. Systematic TAA reflects the manager skill in predicting and timing short-term market.
C. Discretionary TAA relies on quantitative signals to capture return anomalies.
解释：
A is correct.
考点：tactical asset allocation
解析：A是TAA的定义。BC为TAA的两种方式，正好说反了。Discretionary TAA是qualitative的，反映了基金经理预测和择时的能力。Systematic TAA企图找到资产大类在收益上的异常，所以抓的是市场信号，是quantitative或者说是rule-based的。
能解释一下B吗 感觉也和timing没关系吧？怎么体现quantitative？