You are planning a Skype for Business Server 2015 Edge Server deployment. You have nine public addresses for the planned

[answerhappygod]

You are planning a Skype for Business Server 2015 Edge Server deployment. You have nine public addresses for the planned deployment.
You need to recommend an Edge Server deployment that meets the following requirements:
✑ A different public IP address must be assigned to each Edge service.
✑ Users must be able to sign in from a Skype for Business mobile client.
✑ Users must be able to communicate with partners who are enabled for XMPP.
✑ Remote users must be able to access conferences.
✑ Remote users must be able to access the Skype for Business Server infrastructure if an Edge Server fails.
What should you recommend?

A. three Edge Servers that use hardware load balancing
B. two Edge Servers that use hardware load balancing
C. three Edge Servers that use DNS load balancing
D. two Edge Servers that use DNS load balancing