NL25 QQ 4Bet flopped topset

[Ostarr]

PokerStars No-Limit Hold'em, $0.25 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

SB ($23) 36/18/1.3 über 39 hände
Hero (BB) ($29.20)
UTG ($27)
MP ($25.50) 51/21/2.2 über 68 hände
CO ($5.30)
Button ($26.30)

Preflop: Hero is BB with :qd, :qc
UTG raises to $0.50, MP raises to $1.75, 2 folds, SB calls $1.65, Hero raises to $5, 1 fold, MP calls $3.25, SB calls $3.25

Flop: ($15.50) :th, :5d, :qh (3 players)
SB checks, Hero ???