Which tool should you use?

You are the Office 365 administrator for your company. The company is running Microsoft Exchange
Server 2007 with Service Pack 3 on-premises and has 500 mailboxes.
Management requests that you migrate all mailboxes to Office 365. You are researching the
available migration types.
You need to generate a custom step-by-step checklist for multiple migration types.
Which tool should you use?

A.
Exchange Server Deployment Assistant

B.
Exchange Best Practices Analyzer

C.
Exchange 2013 Server Role Requirements Calculator

D.
Microsoft Remote Connectivity Analyzer