GMAT Sentence Correction (SC) | Re: Of all the record companies involved in early jazz, the three most

Of all the record companies involved in early jazz, the three most prominent were Columbia, Victor, and OKeh.

A.Of all the record companies involved in early jazz, the three most prominent were Columbia, Victor, and OKeh.
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B.Three most prominent record companies ofall the ones that were involved in early jazz were Columbia, Victor, and OKeh.

C.Columbia, Victor, and OKeh were, of all the record companies involved in early jazz, the three of them that were most prominent.
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