How many users are supported on the Cisco Unified Communications models 540 and 560 platforms?

A.
16 users on the UC540 and 64 users on the UC560

B.
16 users on the UC540 and 104 users on the UC560

C.
32 users on the UC540 and 64 users on the UC560

D.
32 users on the UC540 and 104 users on the UC560