What is the difference between the remove and the purge action with the dpkg command?

A.
-remove removes a package, -purge also removes all packages dependent on it

B.
-remove only removes the program, -purge only removes the config files

C.
-remove removes the program, -purge also removes the config files

D.
-remove removes only the package file itself, -purge removes all files related to the package

Explanation:
-r or -remove remove everything except configuration files. This may avoid having to reconfigure the package if it is reinstalled later. (Configuration files are the files listed in the debian/conffiles control file).-P or-purge removes everything, including configuration files. If-a or-pending is given instead of a package name, then all packages unpacked, but marked to be removed or purged in file /var/lib/dpkg/status, are removed or purged, respectively.