While applying a service update on a system using SMIT, the system administrates SMIT Command Status screen shows "Command: failed". Which of the following procedures should be performed to investigate the failure?（）
- AExit the SMIT session and re-apply the update.
- BSelect the SMIT option to Clean UP After an Interrupted Installation.
- CExamine the installation summary report to determine the cause of the failure.
- DExamine the console log to view the error messages generated by the failure.