NL100: AA in 3bet pot oop. welche line?

[VinniePaz]

No-Limit Hold'em, $1.00 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

SB ($101.55)
Hero (BB) ($106.20)
UTG ($100)
MP ($12.50)
CO ($107)
Button ($115.40)

Preflop: Hero is BB with :ac, :as
UTG raises $3.50, 4 folds, Hero raises $13, UTG calls $10.50

Flop: ($28.50) :kh, :tc, :kd (2 players)
Hero...?