Chances of Same Answer Choice in a Row on the LSAT

Looking through the LSAT PrepTest answer keys, I found only 9 instances in modern LSAT history (June 1991-December 2009) where the same answer choice appeared 4 times in a row.2 of these instances occurred in the same LSAT section.Now, you might have thought LSAC artificially increases the number of 4-in-a-rows to throw test-takers off - to make them second-guess themselves. However, it appears