A user is on holiday for two weeks. Anyone sending an email to that account should receive
an autoresponse. Which of the following procmail rules should be used, so that all incoming
emails are processed by vacation?

A.
:0c: | /usr/bin/vacation nobody

B.
:w | /usr/bin/vacation nobody

C.
:0fc: |/usr/bin/vacation nobody

D.
| /usr/bin/vacation nobody

E.
:> |/usr/bin/vacation nobody