What should you recommend?

Your company is a hosting provider that provides cloud-based services to multiple
customers.
Each customer has its own Active Directory forest located in your company’s datacenter.
You plan to provide VPN access to each customer. The VPN solution will use RADIUS for
authentication services and accounting services.
You need to recommend a solution to forward authentication and accounting messages from
the perimeter network to the Active Directory forest of each customer.
What should you recommend?
More than one answer choice may achieve the goal. Select the BEST answer.

A.
One RADIUS proxy for each customer and Active Directory Federation Services (AD FS)

B.
A RADIUS server for each customer and one RADIUS proxy

C.
One RADIUS proxy and one Active Directory Lightweight Directory Services (AD LDS)
instance for each customer

D.
A RADIUS server for each customer and a RADIUS proxy for each customer