You have an Active Directory directory service forest with a forest root domain. The root domain has  two child domains named na.corp.contoso.com and asia.prod.contoso.com. You have an Active Directory  site for each domain. All sites are connected through the DEFAULTIPSITELINK site link. You need to  minimize the time that is required to authenticate users when they access resources in the other domain.   What should you do？（）

• A、 Create a shortcut trust between the child domains.
• B、 Create a shortcut trust from the forest root domain to each of the child domains.
• C、 Decrease the replication interval for the DEFAULTIPSITELINK site link.
• D、 Create a batch script to replicate changes between the sites. Schedule the script to run on a regular basis.