50nl: Sanity check

[Bastian]

I have about 64 hands on him at 42/2/2. No other reads. Im lost here. Is this a standard fold? I have lots of trouble multiway especially.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 5 Players - (LegoPoker HH Converter)

Hero (SB): $50.70
BB: $35.60
UTG: $71.40
CO: $54.70
BTN: $54.85

Preflop: Hero is dealt K A[img]/images/graemlins/spade.gif[/img] (5 Players)
UTG folds, CO calls $0.50, BTN calls $0.50, <font color="red">Hero raises to $3.00</font>, BB calls $2.50, CO calls $2.50, BTN folds

Flop: ($9.50) 5 8[img]/images/graemlins/heart.gif[/img] 9 (3 Players)
Hero checks, <font color="red">BB bets $2.00</font>, CO calls $2.00, Hero calls $2.00

Turn: ($15.50) K[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">Hero bets $11.00</font>, BB folds, <font color="red">CO raises all-in to $49.70</font>, Hero ?