老师，可以讲解一下有关active share 这个知识点吗？谢谢老师！
问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ201512181000007206 问题如下 The risk measure referreto in Statement 3 is: A.active share. B.beta sensitivity C.ex post tracking error. C is correct. A trationasset manager uses ex post tracking error when analyzing backwarlooking returns. The versifieFixeIncome Funprospectus stipulates a target benchmark viation of no more th5 bps. Tracking error is a measure of the gree to whithe performanof a given investment viates from its benchmark. 能再下A吗？这种情况为什么不能理解为主动偏离？
NO.PZ201512181000007206 问题如下 The risk measure referreto in Statement 3 is: A.active share. B.beta sensitivity C.ex post tracking error. C is correct. A trationasset manager uses ex post tracking error when analyzing backwarlooking returns. The versifieFixeIncome Funprospectus stipulates a target benchmark viation of no more th5 bps. Tracking error is a measure of the gree to whithe performanof a given investment viates from its benchmark. rp-rb 想问下这个不应该是relative relative么？
NO.PZ201512181000007206 没读懂条件和答案之间的联系 虽然选了C，但是不明白为什么事后 而且这道题的答案也不是很理解。
NO.PZ201512181000007206 老师,这道题题干是什么意思?三个分别代表什么呢?感觉没学过,谢谢
NO.PZ201512181000007206 B是哪个知识点呢？麻烦老师讲一下，谢谢！
