What are two valid live migration scenarios for virtual machines in your environment?

A company named Contoso, Ltd has five Hyper-V hosts that are configured as shown in the following table.

What are two valid live migration scenarios for virtual machines in your environment?
A . from Sever1 to server5
B . from Server4 to Server 5
C . from Server2 to Server3
D . from Server3 to Server4