Two companies are merging, neither of which has a computer network. They decide they want to use Windows 2000 and Active Directory. They have a small IT staff and would like to have a single domain. However, they'd like to keep their naming systems relatively separate. What can you do to best accommodate their needs?

a. Create two domains and create two one-way trust relationships between them.

b. Create a single domain, giving one company the root domain name and making the other a sub-domain.

c. Create an empty root domain and give each company a sub-domain name.

d. Tell them they must use a hyphenated name if they wish to have a single domain.