I have a server and a few domains and two webpages. Can't figure out how to do the following:

A.com -> root\
www.A.com -> root\
B.com -> root\
www.B.com -> root\
C.com -> root\folder1\
www.C.com -> root\folder1\

By the way. What is the 'and' logical operator used in htaccess? I found that 'or' is [OR] but [AND] doesn't seem to work. And what is the language htaccess is written in:)?

UPDATE

I made a mistake in the question though. Here's what I'd really want to do. DNS is set for the domain A.com to point to the root folder of the server. Now I would like to set the following redirections:

Any domain other than C.com and other than D.com redirects (301) to www.A.com. A.com points to the root folder of the server anyway and that is set in DNS.

Domain www.C.com points to the folder 'folder1' on the server. Can it be set in htaccess?

Now domains C.com, www.D.com and D.com redirects to www.C.com.