A Customer Has Eight X400 24GB RAM That Supports 400

A customer has eight X400 24GB RAM that supports 400 client connections today The customer plans to add 400 more clients in the next few months. They are looking at adding an A-Series node to the cluster to help with client connections. Before they start adding client connections, what hardware change do you recommend?

A) Add RAM to offset concurrent client connections
B) Add an A100 to offset concurrent client connections
C) Add nodes with SSD to help with connections
D) Add more network switches to increase the number of connections