A.Configure the DNS Suffix Search List option to ad.contoso.com, ad.fabrikam.com.
B.Configure the Allow DNS Suffix Appending to Unqualified Multi-Label Name Queries option to True.
C.Configure the Primary DNS Suffix option to ad.contoso.com, ad.fabrikam.com. Configure the Primary DNS Suffix Devolution option to True.
D.Configure the Primary DNS Suffix option to ad.contoso.com, ad.fabrikam.com. Configure the Primary DNS Suffix Devolution option to False.