Which of the following audit procedures would most likely assist an auditor in identifying conditions and events that may indicate there could be substantial doubt about an entity’s ability to continue as a going concern?

Which of the following audit procedures would most likely assist an auditor in identifying conditions and events that may indicate there could be substantial doubt about an entity’s ability to continue as a going concern?

a. Review compliance with the terms of debt agreements.
b. Confirmation of accounts receivable from principal customers.
c. Reconciliation of interest expense with debt outstanding.
d. Confirmation of bank balances.