Your company has an Active Directory Domain Services (AD DS) domain. All servers run Windows Server 2008 R2. All portable computers run Windows 7. You virtualize applications by usi ng Microsoft Application Virtualization (App - V). You are deploying servers to five new branch offices. Each branch office has its own subnet, and will stream virtual applications from a local IIS server. Users frequently move between branch offices with th eir portable computers. You need to ensure that branch office users access virtualized applications only from the local IIS server. What should you do?（）

A、Create a single DNS SRV record that contains all servers.

B、Create a single DNS A record and configure an HTTP host header for each IIS server.

C、Create five DNS A records with the same name. Point each A record to a different IIS server and disable the round robin option.

D、Create five DNS CNAME records with the same name. Point each CNAME record to a sin gle IIS server. Disable the netmask ordering option.