An administrator has an existing HMC and POWER6 570 connected to a network switch. The administrator is planning to install two POWER6 570s with a dedicated HMC. Which infrastructure is required for the new HMC?（）
- AAn additional switch for the new HMC
- BAsynchronous adapters on the new HMC
- CThe two 570 servers are directly connected to the new HMC
- DOne 570 is directly connected to the new HMC and the other is directly connected to the existing HMC