Your company has a single Active Directory directory service forest with seven domains. Company policy states that users must log on using their user principal names (UPNs). User logon names follow the firstname.lastname naming convention. You are preparing to allow users in a domain named NE.sales.contoso.com to log on using firstname.lastname@nesales. You need to ensure that all users in the NE.sales.contoso.com domain have the ability to log on using firstname.lastname@nesales, while
maintaining existing network access. What should you do?

A.
Create a UPN suffix named nesales in the contoso.com forest. Rename the NE.sales.contoso.com domain to nesales.contoso.com.

B.
Create a UPN suffix named nesales.contoso.com in the contoso.com forest. Rename the NE.sales.contoso.com domain to nesales.contoso.com.

C.
Create a UPN suffix named nesales in the contoso.com forest. Modify the user accounts in the NE.Sales.contoso.com domain to use the UPN suffix nesales.

D.
Create a UPN suffix named nesales.contoso.com in the contoso.com forest. Modify the user accounts in the NE.Sales.contoso.com domain to use the UPN suffix nesales.contoso.com.