When reviewing input controls, an IS auditor observes that, in accordance with corporate policy, procedures allow supervisory override of data validation edits. The IS auditor should: 
A、not be concerned since there may be other compensating controls to mitigate the risks. 
B、ensure that overrides are automatically logged and subject to review. 
C、verify whether all such overrides are referred to senior management for approval. 
D、recommend that overrides not be permitted.