You have an Exchange Server 2010 organization.
Your company acquires another company that has
an Exchange Server 2010 organization.
You need to recommend a solution for the Exchange Server

* 2010 organization to meet the following requirements:
* All users must be able to view the global address lists ( GALs ) for both organizations
* All users must be able to view free/busy information for users in both organizations

What should you include in the solution?

A.
Implement Active Directory Federation Services (AD FS)
Run the Microsoft Exchange Inter-Organization Replication tool

B.
Implement Microsoft Identity Lifecycle Manager (ILM) 2007
Create a two-way cross-forest trust between both organizations
Create a federation trust between both organizations

C.
Implement Microsoft Identity Lifecycle Manager (ILM) 2007
Run the New Organization Relationship wizard
Create a two-way cross-forest trust between both organizations

D.
Implement Active Directory Federation Services (AD FS)
Run the Microsoft Exchange Inter-Organization Replication tool