Primesouth Bank issued a loan to Okefenokee Aircraft, Inc. (OAI), to buy a plane. OAI executed a note in favor of Primesouth in the amount of $161,306.25, plus interest. The plane secured the note. When OAI defaulted, Primesouth repossessed the plane. Instead of disposing of the collateral and seeking a deficiency judgment, however, the bank retained possession of the plane and filed a suit in a Georgia state court against OAI to enforce the note. OAI did not deny defaulting on the note or dispute the amount due. Instead, OAI argued that Primesouth Bank was not acting in a commercially reasonable manner. According to OAI, the creditor must sell the collateral and apply the proceeds against the debt. What is a secured creditor’s obligation in these circumstances? Can the creditor retain the collateral and seek a judgment for the amount of the underlying debt, or is a sale required? Discuss.