[A19] You have a Lync Server 2013 infrastructure that has Enterprise Voice enabled. When a caller dials an unassigned number, the caller hears a custom message, and then the caller is forwarded to a user named User1. Several months later, User1 leaves the company. You need to ensure that when a caller dials an unassigned number, the caller hears the custom message and is forwarded to a user named User2. Which cmdlet should you run?
A. Set-CsUnassignedNumber
B. Set-CsAnnouncement
C. Set-CsUser
D. Set- CsVoice Route
