Blinds 20/40, early mtt. Caller A limps utg, caller B limps, we raise to 160 with JJ two from the cut off. Blinds fold but both callers see the flop

Caller A (UTG) checks, Caller B leads for 320 into the 540 pot
There's a chance we did what we shouldn't do, but what should we do in these situations?
Stack sizes - Us 2.9k, caller A 1.8k, caller B 1.3k
hmmm, pretend this is in the Learning Centre please
