请问这个知识点在哪里？可否帮忙讲解一下题目。
问题如下图：
选项：
A. 
B. 
C. 
解释：
NO.PZ2017092702000085 问题如下 Whiof the following assets most likely requires the use of a multivariate stribution for moling returns A.A call option on a bon B.A portfolio of technology stocks C.A stoin a market inx B is correct. Multivariate stributions specify the probabilities for a group of relateranm variables. A portfolio of technology stocks represents a group of relateassets. Accorngly, statisticinterrelationships must consire resulting in the neeto use a multivariate normstribution.对于多元分布来说，适用于“a group of ranm variables”，对于一个组合内有多个资产（变量）的情况比较适用，选 老师为什么不能选C
NO.PZ2017092702000085问题如下Whiof the following assets most likely requires the use of a multivariate stribution for moling returns A.A call option on a bon B.A portfolio of technology stocks C.A stoin a market inx B is correct. Multivariate stributions specify the probabilities for a group of relateranm variables. A portfolio of technology stocks represents a group of relateassets. Accorngly, statisticinterrelationships must consire resulting in the neeto use a multivariate normstribution.对于多元分布来说，适用于“a group of ranm variables”，对于一个组合内有多个资产（变量）的情况比较适用，选什么是多元分布
NO.PZ2017092702000085 A portfolio of technology stocks A stoin a market inx B is correct. Multivariate stributions specify the probabilities for a group of relateranm variables. A portfolio of technology stocks represents a group of relateassets. Accorngly, statisticinterrelationships must consire resulting in the neeto use a multivariate normstribution. 对于多元分布来说，适用于“a group of ranm variables”，对于一个组合内有多个资产（变量）的情况比较适用，选A什么意思，请解答
老师，三个能给讲讲吗？
