Sentence Correction (SC) | SEC has revealed evidence of a brokerage house as big as Stern & Co,

HiDmitryFarber

B. that a brokerage house as big as Stern & Co, delivering about 1.5 million shares daily, facilitated
D. that a brokerage house as big as Stern & Co delivered about 1.5 million shares daily, facilitating

I chose B on grounds that relative clause absorbed -ing modifier, making the sentence unambiguous, whereas in choice D "facilitating" stands out of prepositional phrase, and can refer to the main SVO "SEC has revealed evidence".

My question: What
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