How can the engineer ensure that all layers are available in Site A and Site B?

Scenario: A Citrix Engineer has two datacenters: Site A, the main datacenter and Site B, the secondary datacenter. Both datacenters have Citrix App Layering 4.3 installed.

How can the engineer ensure that all layers are available in Site A and Site B?
A . Reconfigure ELM Site A and ELM Site B to use DFSR for all layers
B . Configure layer synchronization directly between ELM Site A and ELM Site B using the Citrix App Layering console
C . Export all the Standard Layers directly from ELM Site A to ELM Site B and export all other layers to a Windows Share, then import them to Site B
D . Export all layers from ELM Site A to a Windows Share, then import them to Site B

Answer: A