The system administrator did a new install of AIX on a server about a week ago. The system was not rebooted after the installation. CDE is running on this system as is TCPIP. The system administrator has started configuring the system percompany directives. The power cable was inadvertently disconnected from the wall causing the sever to lose power. Upon reboot, the system appears to hang during log in from the console or from Xterminals. Which of the following is the most probable cause?（）

A. It is a hardware problem caused by the power failure.
B. There is a network problem, most probably with name resolution.
C. Sine the system was never rebooted, devices are marked defined instead of available and need to be activated.
D. Some filesets may be marked as broken and need to be reinstalled.