A CE is using Deployment Manager to install two RPAs in a new CDP configuration.All the RPAs are rack mounted, and PC and P networks are connected.The RPAs are loaded with the same ISO image and their IP addresses are set.However, the Deployment Manager fails.
What is a possible cause?

A.
The customer’s PC must be on the same subnet as the RPAs.
B.
The customer must ensure that port 22 is open on their PC or network.
C.
The customer should not set the IP addresses on the new RPAs first.
D.
The customer must connect to the RPAs using a crossover cable for the first installation.