Your network contains an Active Directory forest named contoso.com. The forest contains two child domains named north.contoso.com and south.contoso.com.
You plan to prepare Active Directory for a new Microsoft Exchange Server 2019 organization. All the domains will host user accounts for the Exchange mailboxes.
An administrator runs Exchange Setup on a domain controller in the forest. You need to ensure that the forest is fully prepared for Exchange.
What should you verify in the child domains?
A. whether the Exchange Install Domain Servers group exists in the Microsoft Exchange System Objects container
B. whether the Recipient Management group exists in each domain
C. whether the Organization Management group exist in each domain
D. whether the Microsoft Exchange Security Groups organization unit (OU) exists in each domain
