A corporate environment includes an on-premise deployment of Exchange Server 2010 SP1.
The company needs to share calendar availability information with a partner. The partner is using a
cloud-based Exchange Server 2010 SP1 service. You need to recommend a solution for sharing
calendar availability information for all employees with the partner. What should you recommend?

A.
Create a federation trust and a TXT DNS record. Then create an organization relationship with the
partner.

B.
Create a federation trust and a CNAME DNS record. Then create an organization relationship with
the partner.

C.
Add the partner’s domain as an accepted domain. Then create a TXT DNS record and a transport
rule.

D.
Add the partner’s domain as an accepted domain. Then create a CNAME DNS record and a group
policy for all users.