The system hangs at boot time after starting NFS services. What is the most likely cause?

A.
The action parameter of rcnfs in /etc/inittab is ‘off’ and the script called is not exiting.

B.
The action parameter of rcnfs in /etc/inittab is ‘wait’ and the script called is not exiting.

C.
The action parameter of rcnfs in /etc/inittab is ‘once’ and the script called is not exiting.

D.
The action parameter of rcnfs in /etc/inittab is ‘respawn’ and the script called is not exiting.