You are employed as the Exchange administrator at Company.com.The Company.com network contains an Exchange Server 2010 Organization.The Active Directory forest of Company.com contains two sites named ExamWaysA and ExamWaysB.both sites contain 6 mailbox servers.examwaysa contains a mailbox server named -ex01 and examwaysb a mailbox server named ex02.Company.com has a public folder named testdata that is replicated to -ex01 and -ex02.during the course of the week you receive numerous complaints from users stating that they are unable to access the public folder when -ex01 is offline.you receive an instruction from management to resolve this issue as soon as possible.to ensure productivity you decide to make sure that all examways users are able to utilize testdata when -ex01 becomes offline.What should you do？（）

• A、you should consider having -ex01 and -ex02 added to a database availability group （dag）.
• B、you should consider having -ex01 added to the public folder referrals for examwaysb.
• C、you should consider having -ex02 added to the public folder referrals for examwaysa.
• D、you should consider having -ex01 and -ex02 added to a client access server array.