Which server should you add?

Your network contains an Active Directory forest. The forest contains two domains named litware.com and exchange.litware.com and a Microsoft Exchange Server 2019 organization.

The relevant servers are configured as shown in the following table.

EX01 and EX02 have Exchange Server 2019 installed and are in a database availability group (DAG) named DAG01. You need to add in additional server to DAG01.

Which server should you add?
A . Server01
B . Server02
C . Server03
D . Server04

Answer: D