You are configuring the network for a new company with two sites. The main office is in Denver, and a branch office is in Phoenix. The sites are connected by a WAN link. All servers, including domain controllers, will run Windows Server 2012 R2. All servers will be members of an Active Directory domain. The main office uses the corp. westsim domain. All domain members are currently located in the Denver location. The branch office uses the research. corp. westsim domain. All domain members are located only in the Phoenix location. The following servers are in each location: Location Server Role Denver srv1.corp. westsim Domain controller DNS server srv2.corp. westsim Domain controller DNS server srv3.corp. westsim Domain controller Phoenix srv1.research. corp. westsim Domain controller DNS server srv2.research. corp. westsim Domain controller DNS server srv3.research. corp. westsim Domain controller All zones are Active Directory-integrated zones, and there are no other DNS servers on the network. To improve name resolution at the Phoenix location, you install a domain controller and DNS server named srv4.research. corp. westsim in the Phoenix location. You want this server to have a copy of the corp. westsim zone. You do not want any servers in the Denver location to have a copy of the research. corp. westsim zone. You want to minimize the amount of DNS information stored on each server. What should you do