A corporate environment includes two Active Directory Domain Services (AD DS) forests, as shown in the following table.

You need to ensure that users in the contoso.com domain can access resources in the eng.fabrikam.com domain.

What should you do?

A.
Enable selective authentication.

B.
Enable forest-wide authentication.

C.
Create an external trust between contoso.com and eng.fabrikam.com.

D.
Enable domain-wide authentication.