When the debtor has defaulted on its obligation, the creditor is entitled to recover from the surety unless which of the following is present?
A) the surety is in the process of exercising its right of exoneration against the debtor
B) the debtor had died or became insolvent
C) the creditor could collect the entire debt from the debtor collatoral in its possession
D) the surety is a gurantor of collection and the creditor failed to exercise due diligence in enforcing its remidies against the debtor