You have a Skype for Business Server 2015 environment. All users are enabled for Enterprise Voice. You have a Microsoft

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You have a Skype for Business Server 2015 environment. All users are enabled for Enterprise Voice. You have a Microsoft Exchange Server 2013 organization that contains one server named EX01.
You plan to implement Unified Messaging (UM). From Skype for Business Management Shell, you run the following commands:
New-UMDialPlan-Name UMDialPlan-UriType "SipName" ""VoipSecurity Secured ""NumberOfDigitsInExtension 4 ExchUCUtil.ps1
From Event Viewer, you discover the following error message when Skype for Business Server 2015 attempts to transfer a call to UM: "Attempts to route servers in an Exchange UM Dialplan failed. No server in the dialplan UMDialPlan accepted the call with id [03b5ba2bf7ec4663bc43e8e49c246634].
Cause: Dialplan is not configured properly."
You need to ensure that the Enterprise Voice users can receive voice mail.
Which two actions should you perform? Each correct answer presents part of the solution.

A. From the Exchange Management Shell, run the following command: New-UmAutoAttendant -name LyncAa -UmDialPlan LyncUMDialPlan -Status Enabled
B. From the Exchange Management Shell, run the following command: Set-UmCallRouterSettings EX01 -UmStartupMode Tls -DialPlans "UMDialPlan"
C. Change the value of the VoipSecurity of the UMDialPlan from Secured to SipSecured.
D. From the Exchange Management Shell, run the following command: Set-UmService EX01 -UmStartupMode Tls -DialPlans "UMDialPlan"
E. Change the value of the UriType property of the UMDialPlan from SipName to E.164.