50nl Do you call AI w/ this NFD + OC on the flop?

[bored]

Both are unknown.

Should I call?

Is there a better line to take on the flop? Should I have reraised pre?

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 6 Players - (LegoPoker Hand History Converter)

Hero (SB): $49.50
BB: $54.85
UTG: $109.10
MP: $50.45
CO: $15.20
BTN: $93.05

Preflop: Hero is dealt Q[img]/images/graemlins/club.gif[/img] A[img]/images/graemlins/club.gif[/img] (6 Players)
<font color="red">UTG raises to $1.75</font>, MP calls $1.75, CO folds, BTN calls $1.75, Hero calls $1.50, BB folds

Flop: ($7.50) 7[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/spade.gif[/img] (4 Players)
<font color="red">Hero bets $5.75</font>, UTG calls $5.75, <font color="red">MP raises all-in to $48.70</font>, BTN folds Hero?