You work as the Exchange administrator at Company.com.The Company.com network contains an Exchange Server 2010 Organization.Company.com has its headquarters in Paris where you are located.you are responsible for managing two exchange servers named -ex01 and -ex02.both exchange servers are configured to host the client access server role， the hub transport server role as well as the mailbox server role.terstkingex01 and -ex02 are members of a database availability group.during the course of the week you receive an instruction from management to ensure that users are able to make a connection to the client access server in the event of a single server failure. What should you do？（）

• A、Your best option would be to have the Network Load Balancing feature installed on every server.Thereafter a second IP address should be assigned to every network adapter.
• B、Your best option would be to have two new records created for the Client Access server from the DNS manager.
• C、Your best option would be to have a hardware load balancer deployed. Then a DNS record should be created for the virtual IP address. Thereafter a Client Access server array should be configured.
• D、Your best option would e to have a new service named Client Access Server created and a new IP address allocated from the Failover Cluster Manager.