Was this flop call resonable?

[JapaneseSandman]

Party Poker 0.5/1 Hold'em (7 handed) converter

Preflop: Hero is BB with 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">UTG raises</font>, <font color="#666666">2 folds</font>, CO calls, Button calls, <font color="#666666">1 fold</font>, Hero calls.

Flop: (8.50 SB) T[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, CO calls, Button calls, Hero calls.

Turn: (6.25 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">UTG bets</font>, CO calls, Button calls, Hero folds.

River: (9.25 BB) 5[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
UTG checks, CO checks, Button checks.

Final Pot: 9.25 BB

Results in white below: <font color="#FFFFFF">
UTG has Ac Qc (one pair, tens).
CO has 4c 4d (two pair, tens and fours).
Button has Kc 9c (one pair, tens).
Outcome: CO wins 9.25 BB. </font>

Wang tang ting tong I am the Japanese sandman, take eight.