问题如下：
Given the table above, compared with a normal distribution, the distribution of returns for Stock A is most likely to:
选项：
A.have the same kurtosis.
B.be more peaked.
C.have thinner tails.
解释：
B is correct. Excess kurtosis is positive means kurtosis is larger than 3 and the return distribution is more peaked than normal distribution.
刚刚写错了，我想说的是，C 为啥不对啊？Skewness 如果不是 0，不管是正的还是负的，不是应该朝左或者朝右扭曲了么？这样的扭曲会造成thinner tail？
