老师您好，题目描述的应该是TC，答案为什么是IC呢？谢谢

NO.PZ2015121810000077问题如下 The expanfunmentlof active management is statefollows:E(RA)=(TC)(IC)BRσAE\left(R_A\right)=\left(TC\right)\left(IC\right)\sqrt{BR}\sigma_AE(RA​)=(TC)(IC)BR​σA​Whicomponent on the righthansi represents the extent to whithe portfolio manager’s expectations are realize The A.transfer coefficient, TC.B.information coefficient, IC.C.breah, BR. B is correct. The IC measures investment manager’s ability to forecast returns. 解析考字母的定义，IC衡量的是基金经理对投资收益预测的准确性。 TC与IC的，看起来不太清晰！