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

Me too in a first instance picked C.

but as usual is important to revise a question in particular whan you pick it wrong and is difficult such this question.

So: if we look at the sentence ONLY from the meaning standing point in B C D and E (I do not see anything else: no like no other grammar rule)have or to have it's like an huge black hole.

It doesn't hold anywater. Completely syupid to think (for me of course) to solely think to the other answerchoices......