You have an existing Active Directory site named Site1. You create a new Actrve Directory site and name it Site2.You need to configure Active Directory replication between Site1 and Site2. You install a new domain controller. You create the site link between Site1 and Site2. What should you do next（）
- AUse the Active Directory Sites and Services console to configure a new site link bridge object.
- BUse the Active Directory Sites and Services console to decrease the site link cost between Site1 and Site2.
- CUse the Active Directory Sites and Services console to assign a new IP subnet to Site2. Move the new domain controller object to Site2.
- DUse the Active Directory Sites and Services console to configure the new domain controller as a preferred bridgehead server for Site1.