Your network contains two Active Directory forestsnamed contoso.comand nwtraders.com.
Active Directory Rights Management Services(AD RMS) is deployed in each forest.
You need to ensure that users from the nwtraders.com forest can access AD RMS protected content in
the contoso.com forest.
What should you do?

A.
Add a trusted user domain to the AD RMS cluster in the nwtraders.com domain.

B.
Add a trusted user domain to the AD RMS cluster in the contoso.com domain.

C.
Create an external trust from nwtraders.com to contoso.com.

D.
Create an external trust from contoso.com to nwtraders.corn.

Explanation:
Same question as F/Q44.
Reference:
http://technet.microsoft.com/en-us/library/hh311036.aspx
Using AD RMS trust
It is not necessary to create trust or federation relationships between the Active Directory forests of
organizations to be able to share rights-protected information between separate organizations. AD RMS
provides two types of trust relationships that provide this kind of rights-protected information exchange. A
trusted user domain(TUD) allows the AD RMS root cluster to process requests for client licensor certificates
or use licenses from users whose rights account certificates (RACs) were issued by a different AD RMS root
cluster.You add a trusted user domain by importing the server licensor certificate of the AD RMS cluster to
trust.