A corporate environment includes an on-premise deployment of Exchange Server 2010 SP1. The environment is configured as shown in the following table.

Location Domain Comments
North America wingtiptoys.com Includes Edge Transport server
Europe tailspintoys.com Includes Edge Transport server

The company plans to move the European employee email accounts to a cloud-based Exchange Server 2010 SP1 service provider.
You have the following requirements:

* Route incoming messages to the appropriate Exchange Server environment.
* Ensure that all employees retain their current email addresses.
* Ensure that MX records do not change.

You need to recommend a solution for meeting the requirements.

What should you recommend?

A.
Configure address rewriting. Configure send connectors for the on-premise Hub Transport server and the cloud-based servers.

B.
Configure address rewriting. Configure send connectors for the on-premise Edge Transport server and the cloud-based servers.

C.
Configure an external relay domain for tailspintoys.com. Configure send connectors for the on- premise and cloud-based servers.

D.
Configure an external relay domain for wingtiptoys.com. Configure send connectors for the on- premise and cloud-based servers.