GMAT Sentence Correction (SC) | Re: #Top150 SC: Until 2010, a state tax regulation known as the 80-20 rule

Can someone explain the option A to me? How LIKE is appropriate here? A lot of the comments above mine cited the use of LIKE as a way of comparison. I don't get the structure. And can someone clarify the GMAC's standing on the LIKE vs SUCH AS issue?

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