A company plans to use Office 365 to provide email services for users.
You need to ensure that a custom domain name is used.
What should you do first?

A.
Add the custom domain name to Office 365 and then verify it.

B.
Verify the existing domain name.

C.
Create an MX record in DNS.

D.
Create a CNAME record in DNS.

Explanation:

This is the truth and why the answer is A….. Cant update DNS records without the verification code to validate ownership when adding to O365.