You need to determine the organization’s readiness for the Office 365 implementation

An organization prepares to implement Office 365.
You have the following requirements:
Gather information about the requirements for the Office 365 implementation.
Use a supported tool that provides the most comprehensive information about the current
environment.
You need to determine the organization’s readiness for the Office 365 implementation.
What should you do?

A.
Run the Windows PowerShell cmdlet Get-MsolCompanylnformation.

B.
Run the OnRamp for Office 365 tool.

C.
Install the Windows Azure Active Directory Sync tool.

D.
Run the Office 365 Deployment Readiness Tool.