($33): Tough bubble decision with a shorty?

[xJMPx]

Maybe this isn't a tough decision, but I thought it was. Especially given my read that the BB will call with any Kx.

Seat 5 is the button
Total number of players : 4
BB: ( $2502 )
CO: ( $438 )
Button: ( $4030 )
Hero: ( $1030 )
Trny:17257334 Level:7
Blinds(150/300)
** Dealing down cards **
Dealt to Hero [ 9c Ah ]
CO folds.
Button folds.
Hero ????