A company is currently hosting an ISP service. For security reasons, they want to have different usermappers
for each of their customers.
Is this solution possible?

A.
Yes, but only for each Data Mover.

B.
Yes, by creating a unique usermapper on each VDM.

C.
No, but only for one primary usermapper per system.

D.
No, but only for one primary usermapper per site.