NL100 Prima Poker: AA facing heat on the flop

[ohoh]

SB is 20/11/4.8 over 5k hands (datamined)
BB is 40/18/2.6 over 500 hans and a donk


Prima Poker skin
No Limit Holdem Ring game
Blinds: $0.50/$1
6 players
Converter

Stack sizes:
UTG: $91.00
UTG+1: $130.21
Hero: $192.76
Button: $257.55
SB: $124.50
BB: $74.55

Pre-flop: (6 players) Hero is CO with A[img]/images/graemlins/heart.gif[/img] A[img]/images/graemlins/spade.gif[/img]
2 folds, <font color="#cc0000">Hero raises to $4</font>, Button folds, SB calls, BB calls.

Flop: 5[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] 3[img]/images/graemlins/heart.gif[/img] ($12, 3 players)
SB checks, <font color="#cc0000">BB bets $12</font>, <font color="#cc0000">Hero raises to $39</font>, <font color="#cc0000">SB raises all-in $121</font>, <font color="#cc0000">BB calls all-in $59.55</font>, Hero ???

thx a lot