You have an existing Exchange 2010 environment. Users report that they can share free/busy information with users at a federated partner, but they cannot share contacts with those users.
You need to ensure that your users can share contacts with users at the federated partner.
What should you modify?
A.
The federation trust.
B.
The EWS virtual directory.
C.
The default sharing policy.
D.
The organizational relationship.