You are extending the NIS support in your network to include a new NIS map to support automount direct maps. As part of this process, you modify the NIS Makefile to include the line: touch auto.direct.time; What is the purpose of this line?

A.
It updates the timestamp in the index file for the NIS map so that the data file and the index file are correctly synchronized.

B.
It updates the timestamp on the /var/yp/auto.direct.time file so the system has a record of when the map was last built.

C.
It is used to create the source file auto.direct.time for the NIS map in situations where the source file does not already exist.

D.
It creates the file /etc/auto.direct.time which causes a message to be sent to the syslogd daemon indicating that the NIS map has been changed.