You have a server that runs Windows Server 2003 Service Pack 2 (SP2). An incremental backup runs every weekday at 01:00. On Friday, you examine the Windows Backup log and discover that the last entry in the log is one week old. You need to identify the problem that prevents the backup from running. What should you do? （）
- A From Scheduled Tasks, examine the log.
- B From Event Viewer, examine the system log.
- C From Windows Backup, enable detailed logging and then perform a manual backup.
- D From Windows Explorer, examine the files in the %systemroot%\system32\LogFiles folder.