A corporate environment includes an on-premise deployment of Exchange Server 2010 SP1 and an Active Directory Domain Services (AD DS) domain. The company plans to move some users to a cloud-based Exchange Server 2010 SP1 environment. The migration process must meet the following requirements:

* Integrate the on-premise environment with the cloud-based environment.
* Migrate all existing mailbox items.
* Authenticate all users by using their AD DS credentials.
* Share calendar availability information among all users.

You need to recommend a tool for gathering information and verifying that the requirements can be met.
Which tool should you recommend?

A.
Exchange Best Practices Analyzer

B.
Exchange Deployment Assistant

C.
Exchange Pre-Deployment Analyzer

D.
Exchange Remote Connectivity Analyzer