In a Dell EMC Avamar Server Rack Architecture, Where Are

In a Dell EMC Avamar server rack architecture, where are the utility node and two internal switches located?

A) Utility node is at the bottom of the rack, the two internal switches are at the top of the rack
B) Utility node is at the top of the rack, the two internal switches are at the bottom of the rack
C) Two internal switches are at the top of the rack, the utility node is above the spare node at the center of the rack
D) One internal switch is installed at the top of the rack, with the second switch above the utility node which is at the bottom of the rack