Which migration strategy should you recommend?

You administer the Microsoft Exchange Server 2007 environment for that has 2,500 mailboxes. You plan to migrate to Office 365 and Exchange Online.
You have the following requirements:
Do not install additional software on-premises to assist with the migration.
Include all folders in the mailboxes including calendar items and tasks.
Do not depend on any user initiated processes.
You need to recommend a migration strategy.
Which migration strategy should you recommend?
Solution: Perform a staged migration.
Does the solution meet the goal?

A.
Yes

B.
No

Explanation:
References: https://support.office.com/en-us/article/Ways-to-migrate-multiple-email-accounts-to-Office-365-
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