You have an Exchange Server 2013 organization. Your company has a Service Level Agreement (SLA) stating that you must be

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You have an Exchange Server 2013 organization.
Your company has a Service Level Agreement (SLA) stating that you must be able to reconnect disconnected mailboxes to user accounts for up to 365 days. After
365 days, disconnected mailboxes must be deleted permanently.
You need to recommend a solution to meet the SLA.
What should you include in the recommendation?

A. Create a retention policy and apply the policy to all mailboxes.
B. Configure the deleted mailbox retention setting for all databases.
C. Configure the deleted item retention setting for all databases.
D. Implement a database availability group (DAG) that contains a lagged copy.