K8s flops middle pair. Raise or call flop?

[Jinx]

absolute poker, 10/20 5 handed. Just say down and is new to 10/20 there, so not many reads.

The button raised A9o UTG and rammed and jammed on a AQ9 flop 3 ways. no read on SB. BB is a straight foward table coach, "taggish" stats, but very straight foward.

Converted at PokerGeek
Absolute Limit Hold'em Ring - $10/$20 Stakes (5 handed)

Starting Stacks
Seat 2: Button ($364)
Seat 3: Small blind ($119)
Seat 4: Big blind ($353)
Seat 5: UTG ($972.50)
Seat 6: CO (Hero) ($658)

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
<font color="#666666">1 fold</font>, Hero raises, Button calls, Small blind calls, Big blind calls

Flop: (7.50 SB) 3[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
Small blind bets, Big blind calls, Hero...

Is this a raise or a call?