which command can be used to stop the apache2 init script from running at boot time once the real script has been removed from /etc/init.d/?

On a Debian based system, which command can be used to stop the apache2 init script from running
at boot time once the real script has been removed from /etc/init.d/?

A.
update-rc.d -d apache2

B.
update-rc.d apache2 delete

C.
update-rc.d remove apache2

D.
update-rc.d apache2 remove

E.
update-rc.d delete apache2

Explanation:
See http://www.debuntu.org/how-to-manage-services-with-update-rc.d