Your company uses Office 365 for all users. The company has the contoso.com SIP domain.
You need to change the SIP address of a user named User1 from [email protected] to [email protected].
You must achieve this goal in the minimum amount of time.
What should you do?
A. Modify the PrimarySmtpAddress attribute of User1.
B. Add a proxy address to the properties of User1.
C. Create a service request.
D. Modify the sign-in status of User1.
Is C really the correct answer ??
https://docs.microsoft.com/en-us/exchange/voice-mail-unified-messaging/set-up-voice-mail/change-sip-address