ABC Bank has an unperfected security interest in the inventory of Big Al's. The unperfected security interest

Is superior to the interest of subsequent lenders who obtain a perfected security interest in the collateral.

Is subordinate to $($has lower priority than$)$ creditors of Big Al's who have perfected security interests prior to perfection by ABC Bank.

Causes ABC Bank to lose important rights against Big Al's.

May only be perfected by filing a financing statement.