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?（）

• A、Exit the SMIT session and re-apply the update.
• B、Select the SMIT option to Clean UP After an Interrupted Installation.
• C、Examine the installation summary report to determine the cause of the failure.
• D、Examine the console log to view the error messages generated by the failure.