GMAT Sentence Correction (SC) | Re: A mutual fund having billions of dollars in assets will

A mutual fund having billions of dollars in assets will typically invest that money in hundreds ofcompanies, 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