AQo BTN facing PSB OTF w/ TPTK

[Phyreball]

No reads, first orbit. I'm not sure what BB is representing. I feel like this is one of those WA/WB hands. Just curious what you guys think.

Poker Stars
No Limit Holdem Ring game
Blinds: $0.10/$0.25
5 players
Converter

Pre-flop: (5 players) Hero is Button with Q[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/diamond.gif[/img]
UTG folds, CO calls, <font color="#cc0000">Hero raises to $1.25</font>, SB folds, BB calls, CO calls.

Flop: 2[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/club.gif[/img] ($3.85, 3 players)
<font color="#cc0000">BB bets $3.25</font>, CO folds, <font color="#cc0000">Hero?