You need to ensure that the network adapter settings of the client computer support joining a homegroup

A company has an Active Directory Domain Services (AD DS) domain. All client computers
run Windows 8.1 and are joined to the domain.
An employee is unable to connect his portable client computer to his home office
homegroup.
You need to ensure that the network adapter settings of the client computer support joining a
homegroup.
What should you do?

A.
Disable IPv6.

B.
Enable IPv4.

C.
Enable IPv6.

D.
Disable IPv4.