The game is 10/20 Fixed Holdem at Party

i have no read on any of the players yet

Table Table 68461 (6 max) (Real Money)
Seat 1 is the button
Total number of players : 6
Seat 1: jatack ( $465 )
Seat 2: ginseng96 ( $485.30 )
Seat 3: AllinCarmen ( $709.63 )
Seat 4: tuck64 ( $772.50 )
Seat 5: ufoldtomuch ( $631.50 )
Seat 6: scrounder ( $500 )
ginseng96 posts small blind [$5].
AllinCarmen posts big blind [$10].
scrounder posts big blind [$10].
** Dealing down cards **
Dealt to ginseng96 [ As Qs ]
tuck64 folds.
ufoldtomuch folds.
scrounder checks.
jatack raises [$20].
ginseng96 raises [$25].
AllinCarmen calls [$20].
scrounder folds.
jatack calls [$10].
** Dealing Flop ** [ 5s, 6h, Ks ]
ginseng96 checks.
AllinCarmen bets [$10].
jatack folds.
ginseng96 calls [$10].
** Dealing Turn ** [ Ah ]
ginseng96 checks.
AllinCarmen bets [$20].
ginseng96 calls [$20].
** Dealing River ** [ Kc ]
ginseng96 checks.
AllinCarmen bets [$20].

should i fold or call?