Math vs Psychology

[winky51]

live tournament 180 people $150 buy in. Start 4000 chips, blids 25/50.

Hand #6 I get Ah Ks, Raise 200.
UTG+1 cold calls. I ask why he called me. He answers "I hit my hand I bust you"

UTG+1 I know a bit. likes to see flops (2 face suited, any pair), medium aggression, plays decent post flop, rarely bluffs (from what I have seen).

FLOP: Kc Qd 6c

I bet 350, he instantly raises to 1000. Pot 1825, 650 for me to call, I have 3450 left and its in the 1st 5 mins of the tournament.

I put him on (in order of likelyness) 44, QQ, KQ, AK, AQs.

whats the next move?