fold.

Fold to 3bet is very positional dependent particularly for solid positional players like this who raise wide in LP and are good enough just to fold to 3bet. They don't raise crap UTG and I don't think they fold much of their raising range to a 3bet. Certainly not 75% which includes all those LP raise-fold times.

The fish are really too short to try and ISO, you have terrible position (abs and rel) if you raise and your hand doesn't really have enough improvement potential for getting fruity.

Fold > call (rel position is at least nice), > 3bet IMO