An HACMP cluster is planned for two logical partitions on IBM p690 servers. Both partitions have three network interface adapters： two service adapters on a production network connected to an IP switch， and an administration adapter on a stand-alone hub that is connected to the p690 server’s HMC. Non-IP hearbeat paths cannot be configured due to the available hardware in the p690 servers. Given the resources available，what is the best configuration for this cluster？（）

Add hardware to provide either serial heartbeats or shared disk heartbeats.
B. Define the administration network so HACMP will send heartb4eats over the non-routed network.
C. Add the administration network adapters to the production resource groups with IPAT via IP replacement selections.
D. Configure the IP Network Interface Module in HACMP with an increased heartbeat detection rate to prevent node isolation confutations.