After managing Frothy Fields for several months, Fields fails to pay a debt, and the value of the collateral is less than the full amount of the debt, which of the following is generally true?

a. The creditor must file a bankruptcy proceeding against the debtor in order to obtain further relief

b. The creditor must absorb the remaining loss and has no further remedy.

c. The creditor must record its security interest before proceeding further

d. The creditor can obtain a deficiency judgment against the debtor for the amount of the debt that was not satisfied from the collatera