Which tool should you use?

You are planning an Office 365 pilot.
You need to ensure that the environment is ready for Office 365.
Which tool should you use?

A.
Microsoft Connectivity Analyzer

B.
Office 365 Best Practices Analyzer

C.
Remote Connectivity Analyzer

D.
Office 365 Health, Readiness, and Connectivity Checks

Explanation:
https://technet.microsoft.com/en-us/library/dn771227.aspx