When the administrator tries to add a user from the newly added domain, the system cannot find the user. What are two possible causes?

An administrator is trying to add a second Active Directory domain to an already configured directory integration. When the administrator tries to add a user from the newly added domain, the system cannot find the user. What are two possible causes? (Choose two.)
A. The service account specified does not have any rights in the added domain.
B. The second domain is not a member of Global Catalog.
C. The newly added domain is not in the same forest.
D. There is a trust relationship established between the domain.
E. The administrator is using a service account with the Domain User Role assigned.