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

We can remove A,C & E as reporting verb "reveal" shold be followed by that.
between B & D

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

SEC has revealed evidencethat a brokerage house as big as Stern & Co, delivering about 1.5 million shares daily, facilitated insider trading and massive intra-day trading throughout last decade putting small retail investors at risk.
correct as we have a clause after that.

D.
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