Gap concept at work?

6max £25NL game, I am in the BB with a full stack - only played 3 or 4 hands and have no reads. Only 4 players are in; utg limps, button raises 5xBB and SB calls. I have ATs.

What should I do?

ATs is so borderline in this spot. I'd probably fold, I hate being out of position and letting villian take the lead.

Without reads OOP fold. You will win small or lose big if you only hit A.

Fold.