Using customer-supplied information, you have designed a solution using a Dell EMC Unity 400F with 250 drives. The customer now wants to increase the drive count to 340 drives at the lowest cost.

Which Unity model configuration should be recommended?

A. Keep the Unity 400F and add two 80-drive DAEs

B. Keep the Unity 400F and add four 25-drive DAEs

C. Upgrade to a Unity 500F and add two 80-drive DAEs

D. Upgrade to a Unity 500F and add two 25-drive DAEs