Call the river?

[Master5hake]

Do I call this river bet with people behind me? Critiques on all streets welcome -
SB is LOOSE and slightly aggresive preflop, not much read post flop
CO is typical loose passive
MP2 is very tight, slightly aggresive preflop, not very aggresive post flop
Party Poker 0.50/1 Hold'em (9 handed) converter

Preflop: Hero is UTG+1 with A[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/diamond.gif[/img].
UTG calls, <font color="#CC3333">Hero raises</font>, <font color="#666666">1 fold</font>, <font color="#CC3333">MP2 3-bets</font>, <font color="#666666">1 fold</font>, CO calls, <font color="#666666">1 fold</font>, SB calls, <font color="#666666">1 fold</font>, UTG folds, <font color="#CC3333">Hero caps</font>, MP2 calls, CO calls, SB calls.

Flop: (18 SB) 7[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/heart.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">MP2 raises</font>, CO calls, SB calls, Hero calls.

Turn: (13 BB) 2[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, Hero checks, <font color="#CC3333">MP2 bets</font>, CO calls, SB calls, Hero calls.

River: (17 BB) 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">SB bets</font>, Hero ...?