SC OG13 题目咨询

花粉唯爱在

A mutual fund having billions of dollars in assets will typically invest that money in hundreds of companies, rarely holding more than one percent of the shares of any particular corporation.
(A) companies, rarely holding more than one percent
(B) companies, and it is rare to hold at least one percent or more
(C) companies and rarely do they hold more than one percent
(D) companies, so that they rarely hold more than one percent
(E) companies; rarely do they hold one percent or more


在这里，答案是A。我有以下几个问题：
1.答案A的问题
                        这里现在分词是做伴随状语吗？
                        这个holding是修饰什么的？
1.答案B的问题
                       OG上的解释说it is rare to hold的先行词模糊，为什么这里it不是指代a fund呢？我觉得挺清晰的啊？
1.答案C的问题
                      在这里是否改变伴随做了并列变了意思所以错误？

谢谢各位大神啊！