5-10 Stud Hand on UB...Fold the River?

[Jeffage]

5-10 stud on UB (standard structure). I have (Q,Q) 7. 2 brings it in, folded to a Queen who raises. A Jack calls. I raise. Folded back to the Queen who calls. The Jack calls. Here are the boards on 4th. Suits don't matter.

ME: (Q,Q) 7x 2x
Opponent A: (x,x) Q 5
Opponent B: (x, x) J 9

A checks, B checks. I bet, both call. Here we are on 5th.

ME: (Q,Q) 7 2 3
Opponent A: (x,x) Q 5 2
Opponent B: (x,x) J 9 4

A checks, B checks. I bet. A folds. B calls. On 6th...

ME: (Q,Q) 7 2 3 4
Player B: (x,x) J 9 4 4

Not so hot. Anyway, B bets, I call. On the river, I fail to improve. He bets again. Easy fold?

Thanks,
Jeff