The syntax of the procmail configuration file is?
A.
:0[flags][:[lockfile]]
[* condition]
action
B.
[* condition]
action
:0[flags][:[lockfile]]
C.
:0[flags][:[lockfile]]
[* condition] action
D.
:0[flags][:[lockfile]]:[* condition]
action
E.
:0[flags][:[lockfile]]:[* condition]:action