I pressed the donk with KK and he pressed back.... what to do??

[Lostit]

The villain in question here is 55/6/7 over 70 hands. I've basically got the donk on the ropes with KK, but catch an Ace on the turn and then get min bet/re-raised all in.

Full Tilt Poker, $0.25/$0.50 NL Hold'em Cash Game, 6 Players
LegoPoker Hand History Converter

SB: $76.90
BB: $62.95
UTG: $41.40
MP: $41.60
Hero (CO): $49.10
BTN: $47.30

Pre-Flop: K[img]/images/graemlins/spade.gif[/img] K[img]/images/graemlins/club.gif[/img] dealt to Hero (CO)
UTG calls $0.50, MP folds, <font color="red">Hero raises to $2.25</font>, 3 folds, UTG calls $1.75

Flop: ($5.25) 5[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img] 8[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">UTG bets $1.50</font>, <font color="red">Hero raises to $6</font>, UTG calls $4.50

Turn: ($17.25) A[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">UTG bets $0.50</font>, <font color="red">Hero raises to $13</font>, <font color="red">UTG raises to $33.15 and is All-In</font>, Hero ???[/i]

Do you ...

A.) Give credit for the Ace here? FOLD
B.) Give credit a slow played monster here? FOLD
C.) Attribute this to a semi-bluff flush draw? CALL
D.) Attribute this to a straight out bluff since his aggression is so high? CALL

This players aggression by street is 4/11/INF, but only 70 hands. Either way, he does get crazier on the later streets.

With the way he played this, Ax is definitely within range, but so are a bunch of junk holdings.

Basically is a $20 call to win an additional $63. What would you do here?