Which three methods can the users use to verify their identity?

You have an Office 365 subscription
You deploy Microsoft Azure multi-Factor authentication for all users
Which three methods can the users use to verify their identity? Each correct answer presents a complete solution
A. Use a verification code from an email message sent to your primary SMTP address.
B. Use a verification code from a mobile app.
C. Make a verification phone call to your authenticated phone number.
D. Use a verification code from an instant message sent to your registered SIP address.
E. Make a verification phone call to your office phone number