Why is this?

You have just completed a default Oracle Solaris 11 installation of a new server system.
While testing network connectivity from your desktop to the server, you find that you are not
able to communicate with the “sendmail” service from your desktop. Why is this?

A.
By default, the “sendmail” software is not installed.

B.
By default, “sendmail” is not enabled on the system.

C.
By default, “sendmail” access is blocked by TCP Wrappers.

D.
By default, “sendmail” responds to local requests only.