[Trivial]

Easy fold especially given your line. UTG's cold-call on this board indicates an overpair or decent draw imo and Button probably has at least two pair (well, we'll give him A9 since he's a maniac) in this spot. All of which indicates your flop lead is pretty bad since you're not comfortable facing a raise and you're not folding out better hands in the first place. If it was a lead for information then you've now acquired that and the decision should be easy.