To harden a newly installed Solaris OS, an administrator needs to disable the sendmail service. Which command will disable the sendmail service, even if the system is rebooted, patched, or upgraded, while still allowing email to be sent?

A.
rm /etc/rc2.d/S88sendmail

B.
pkgrm SUNWsndmr SUNWsndmu

C.
svcadm disable svc:/network/smtp:sendmail

D.
svcadm disable -t svc:/network/smtp:sendmail