You have a Lync Server 2013 and Skype for Business Server 2015 infrastructure. You migrate all users to the Skype for Bu

[answerhappygod]

You have a Lync Server 2013 and Skype for Business Server 2015 infrastructure. You migrate all users to the Skype for Business Server 2015 Front End pool.
After the migration, users are unable to access the whiteboards, attachments, poll data, and the Microsoft PowerPoint presentations that were uploaded to meetings before the migration.
You need to ensure that users can access the PowerPoint presentations, whiteboards, attachments, and the poll data.
What should you do?

A. Run the Move-CsConferenceDirectorySkype for Business Management cmdlet.
B. Run the Move-CsUserSkype for Business Management cmdlet and specify a value for the-ProxyPoolparameter.
C. Run the Move-CsUserSkype for Business Management cmdlet and specify a value for the-MoveConferenceDataparameter.
D. Run theMove-CsLegacyUserSkype for Business Managementshell cmdlet.