Which type of record should you create in each zone?

You are planning an Exchange Server 2016 organization. The organization will contain a Mailbox
server named EX01. Users will have primary SMTP email addresses in the following domains:
– Contoso.com
– Fabrikam.com
– Cohowinery.com
– Wingtiptoys.com
You need to add a DNS record to provide Autodiscover for each domain. Which type of record
should you create in each zone?

A.
CERT

B.
A

C.
MINFO

D.
PTR