[schwza]

i push. if A calls, that's not so bad because he'll have a wide raising range and decently wide calling range. also, if A calls, B folds anything but QQ+. and why would B have QQ+? he should push that to get all the chips in while he's massively ahead of B's range. (of course, there's no hand that i like the cold call from, so it's hard to put B on a range).

so one likely result is that A calls and B folds. in that case, A will usually have one under and one over. i think that then we're marginally happy that we pushed instead of folded (no math, just my guess).

another likely result is that A folds his bad hand and we get to play against B, who is probably not a big pair. that's very good for us.

i'd fold TT though. the odds start looking too good that we'd play a coinflip with A, which (i think) would be very detrimental.