Bind Virtual Hosting

Hello,

i have a Webserver within multiplie Virtual-Host-Sections in the
httpd.conf.

I am planning to run multiplie Subdomains as different Virtual Hosts:


demo.homepage.de
walter.homepage.de
xyz.homepage.de

The Configurationpart of the Webserver seems not to be the problem but
what is the best Bindconfig for that solution?:


a) with ORIGIN
==============

$ORIGIN homepage.de
....

demo IN CNAME www
walter IN CNAME www
xyz IN CNAME www


b) without ORIGIN
=================
demo.homepage.de IN CNAME www
walter.homepage.de IN CNAME www
xyz.homepage.de IN CNAME www

c) with IN A
============
demo IN 192.168.10.1
walter IN 192.168.10.1
xyz IN 192.168.10.1

d) with IN A an $ORIGIN
=======================
demo.homepage.de IN 192.168.10.1
walter.homepage.de IN 192.168.10.1
xyz.homepage.de IN 192.168.10.1

What is the best solution for the Subdomain-Virtual-Hosting?

Thanks a lot!

Walter B.