You are planning to perform a topology upgrade of VPLEX Local to VPLEX Metro.
What is the process you should follow to complete the upgrade successfully?

A.
1. Upgrade the existing cluster
2. Run the I/O module upgrade script
3. Cable the WAN COM connections
4. Register the cluster
5. Configure the new cluster

B.
1. Run the I/O module upgrade script
2. Cable the WAN COM connections
3. Upgrade the existing cluster
4. Configure the new cluster5. Register the cluster

C.
1. Upgrade the existing cluster
2. Register the cluster
3. Configure the new cluster
4. Run the I/O module upgrade script
5. Cable the WAN COM connections

D.
1. Cable the WAN COM connections
2. Run the I/O module upgrade script
3. Configure the new cluster
4. Register the cluster
5. Upgrade the cluster