问题：

[单选]

You are employed as the exchange administrator at TestKing.com. TestKing.com makes use of Microsoft Exchange Server messaging solution. You are responsible for managing the Exchange network for TestKrings.com
TestKing.com plans to deploy Exchange Server 2010 in your network. You decide to deploy the configured servers as displayed in the table below：TestKing.com wants the servers to maintain redundancy in the event of a single disk failure or a singleserver failure. They also want to ensure that the hardware costs are kept to a minimum. You are instructedto recommend a solution to management on how you plan to deploy the Mailbox servers.
What should you do？（）

A . You should recommend that a database availability group （DAG） be deployed that contains three members.Thereafter every member should be configured to make use of JDCO.
B . You should recommend that a two-node Network Load Balancing cluster be deployed.Thereafter every server should be configured to have a RAID5 array.
C . You should recommend that a three-node Network Load Balancing cluster be deployed.Thereafter every server should be configured to connect to a Fiber Channel （FC） Storage AreaNetwork.
D . You should recommend that two Mailbox servers be deployed.Thereafter every server should be configured to have a RAID5 array.