Rural Financial Corporation Is a Secured Party with a Security

Multiple Choice

Rural Financial Corporation is a secured party with a security interest in property owned by Strawberry Fields, Inc. Perfection of this security interest may not protect Rural Financial against the claim of​

A) ​a bank.
B) ​a buyer in the ordinary course of business.
C) ​a subsequent lien creditor.
D) ​a trustee in bankruptcy.