Which migration strategy should you use?

Your company is planning to migrate to Microsoft Exchange Online. The company employs 5,000 people, each with a mailbox currently located on Exchange Server
2000.
The company has the following migration requirements:
Move mailboxes in batches.
Do not migrate calendar or contact items.
Provide migration status reports to administrators.
You need to select the appropriate migration strategy.
Which migration strategy should you use?

A.
Staged migration

B.
Cutover migration

C.
IMAP migration

D.
Hybrid migration