what's my river play...bet, c/f, or c/c?

villain is a TAG reg running at 16/14/3


$0.25/$0.50 No Limit Hold'em Cash Game, 8 Players
Hand Converted at CardRunners.com

MP2: $50 (100 bb)
MP3: $42.55 (85.1 bb)
CO: $24.50 (49 bb)
BTN: $29.90 (59.8 bb)
SB: $50 (100 bb)
BB: $66.05 (132.1 bb)
Hero (UTG+1): $63.90 (127.8 bb)
MP1: $61.70 (123.4 bb)

Pre-Flop: Hero is UTG+1 with K K
Hero raises to $2, MP1 calls $2, MP2 folds, MP3 calls $2, 4 folds

Flop: ($6.75) 9 3 9 (3 players)
Hero bets $5.50, MP1 calls $5.50, MP3 folds

Turn: ($17.75) J (2 players)
Hero bets $13, MP1 calls $13

River: ($43.75) T (2 players)