Your network contains an Active Directory forest. The forest contains two domains named contoso.com and fabrikam.com. The functional level of the forest is Windows Server 2003.
You have a domain outside the forest named adatum.com.
You need to configure an access solution to meet the following requirements:
* Users in adatum.com must be able to access resources in contoso.com.
* Users in adatum.com must be prevented from accessing resources in fabrikam.com.
* Users in both contoso.com and fabrikam.com must be prevented from accessing resources in adatum.com.
What should you create?
A. a one-way realm trust from contoso.com to adatum.com
B. a one-way realm trust from adatum.com to contoso.com
C. a one-way external trust from contoso.com to adatum.com
D. a one-way external trust from adatum.com to contoso.com
