[Apathy]

Well obviously folding isn't an option. If he raised to 90 you might get more value out of playing post flop but you are out of position here with AK so you need to eliminate that factor by pushing here.

As as aside: Did you limp utg with no real plan for the hand? It would seems obvious that you limped here with the intention of limp-raising but now you are asking about the hand AFTER the limp. You need to think about your plan for the hand and why you are doing certain things BEFORE you do them.