The London site facilities had a power issue that prevented users from accessing any service in th.it data center.
You need to review the proposed design so that Skype for Business will be resilient to this kind of issue.
You need to plan the solution.
What should you do?
A . Deploy an additional Front End pool in the London Site and pair it with the primary Front End pool.
B . Deploy an additional Front End pool in the secondary site and pair it with the primary Front End pool. Split the users between the pools.
C . Deploy a Standard Edition server in the London Site and pair it with the primary Front End pool.
D . Deploy an additional Front End pool in the available secondary site and pair it with the primary Front End pool.
E . Deploy an additional Front End server on the London Front End pool.
Answer: B