To answer your question, it really depends on who you ask.
The adverse action notice states that "Our decision was based in whole or in part on information from the credi reporting agency."
To be on the safe side, I'd disclose the credit reporting agency, because you can argue that information from the credit report was used to make your decision. It wasn't necessarily negative information (ie collections, delinquencies etc) but the notice doesn't state that it has to be negative.
Hope this helps.