NO.PZ2018070201000053
问题如下：
According to the utility function U=E(r)-1/2Aσ2 , which of the A's value is most likely indicating that the investor is risk averse?
选项：
A.4
B.0
C.-4
解释：
A is Correct.
Risk averse investor has a positive value in the utility function.
风险规避者不是要求u值越大越好？
效用越大，利润越多？
