How should the integrator set up the management of the datacenter?

A customer has a datacenter with 3-frame Master/Satellite Synergy solution. They plan to add two additional frames to the remote datacenter, but they want to have a single management tool.

How should the integrator set up the management of the datacenter?
A . Add two frames from the remote datacenter as remote enclosures using existing Composer
B . Install one Composer in every frame in both local and remote datacenter
C . Deploy one Composer in each site and link them together
D . Connect the management links with fibre cables if the distance between datacenters is more than 500m

Answer: A