NL10: KK in 3way pot on A-flop

[von7thal]

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Poker Stars Converter Tool from FlopTurnRiver.com (Format: ITH Forums)

MP ($5.90)
CO ($12.30)
Button ($7.40)
SB ($10)
Hero ($27)
UTG ($5)

Preflop: Hero is BB with :ks, :kh.
UTG calls $0.10, MP calls $0.10, 1 fold, Button calls $0.10, SB completes, Hero raises to $0.9, UTG folds, MP folds, Button calls $0.80, SB calls $0.80.

Flop: ($2.90) :ah, :6d, :4s (3 players)
SB checks, Hero ?

soll ich hier überhaupt cb oder hat sowieso jemand ein A?
wenn bet, wie hoch? hälfte? oder standart cb 2/3 - 3/4?