题目
In contrast to normal distributions, lognormal distributions:
选项
A.are skewed to the left.
B.have outcomes that cannot be negative.
C.are more suitable for describing asset returns than asset prices.
答案
B
解析
： B is correct. By definition, lognormal random variables cannot have negative values. ： B正确。 根据定义，对数正态随机变量不能为负值。