Really? How can any of them have been refuted when the records remain sealed? Please elaborate.
A and B have been refuted by multiple other sources. These charges (like the ones by Dirty Harry against Mitt) were made with no evidence.
The evidence to the contrary were several published articles that interviewed his roommates and professors when he was at Columbia. Snopes has done a decent amount of research on it and, well, you know how to use Google. You find it. Or don't. I don't care.
This Root guy has been pedaling this stuff for several years and he himself is one of those libertarian kooks (funny, the Blaze didn't mention that he helped Obama in 2008 by peeling off R voters because he was the Libertarian's VP nominee.... bygones much?)
There might be something in those transcripts, but Root is the last person you want leading that charge. Was Orly Tatez not available?