NO.PZ2015121801000133
问题如下：
Tactical asset allocation is best described as:
选项：
A.attempts to exploit arbitrage possibilities among asset classes.
B.the decision to deliberately deviate from the policy portfolio.
C.selecting asset classes with the desired exposures to sources of systematic risk in an investment portfolio.
解释：
B is correct.
Tactical asset allocation allows actual asset allocation to deviate from that of the strategic asset allocation (policy portfolio) of the IPS. Tactical asset allocation attempts to take advantage of temporary dislocations from the market conditions and assumptions that drove the policy portfolio decision.
B选项的翻译好奇怪，“故意偏离政策组合的决定”，中文上应该怎么理解好一些
