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 following line:
touch auto.direct.time;
What is the purpose of this line?

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

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

C.
The line updates the timestamp on the /var/yp/auto.direct.time file so that the system has a record of when the map was last built.

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