PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

CO ($207.20)
Button ($84.40)
Hero ($172.45)
BB ($148)
UTG ($167.90)
MP ($24.25)

Preflop: Hero is SB with A, A.
UTG raises to $4, 1 fold, CO calls $4, 1 fold, Hero raises to $16, 1 fold, UTG calls $12, CO calls $12.

Flop: ($49) 3, Q, 4 (3 players)
Hero bets $40, UTG folds, CO raises to $191.2, Hero ???