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PokerStars No-Limit Hold'em, $0.10 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($13)
Hero ($9.90)
UTG ($11.70)
MP ($3.90)
CO ($8)
Button ($10.10)

Preflop: Hero is BB with K, K. CO posts a blind of $0.15.
1 fold, MP calls $0.10, CO (poster) checks, Button raises to $0.5, 1 fold, Hero raises to $0.9, MP folds, CO folds, Button raises to $2.2, Hero calls $1.30.

Flop: ($4.70) 7, 9, 7 (2 players)
Hero checks, Button bets $5.8,Hero???