Harry, a resident of Iowa City, Iowa, granted Betty a security interest in his backhoe in exchange for receiving a $10,000 loan from Betty. Betty promptly filed a financing statement with the secretary of state's office in Des Moines, Iowa to perfect her security interest. All of the following are requirements for Betty's security interest in Harry's backhoe to attach EXCEPT: O A. Betty filed a financing statement to perfect her security interest. O B. Betty took a written security interest that clearly described the backhoe as collateral, which was agreed to and signed by Harry. O C.Betty made a loan to Harry. O D. Harry owned the backhoe