What is the biggest risk the architect should highlight to the customer when designing the profile strategy?

Scenario: A Citrix Architect is designing a new Citrix Virtual Apps and Desktops environment. Management has requested dynamic distribution of users between the primary and backup data centers to ensure that all available hardware is utilized during normal operations.

What is the biggest risk the architect should highlight to the customer when designing the profile strategy?
A . Scale-Out File Servers are required to support active-active profile deployments
B . Using Microsoft Distributed File System Replication (DFSR) to replicate user profiles requires significant bandwidth
C . Replicating profiles between the 2 data centers will double storage costs
D . Roaming profiles are NOT supported in active-active Microsoft Distributed File System Replication (DFSR) deployments

Answer: B