What is a key Aruba SD-Branch differentiator against many competitors?

What is a key Aruba SD-Branch differentiator against many competitors?
A . Aruba offers the only branch solution that is targeted specifically for small businesses
B . Aruba SD-Branch offers all of the benefits of Aruba ESP (Edge Services Platform) in the branch.
C . Aruba SD-Branch is a highly specialized solution that is focused exclusively on WAN connectivity and optimization
D . Aruba has the largest market presence for SD-WAN and is the only Leader recognized by Gartner.

Answer: C