You have a Windows Server 2008 R2 Hyper-V failover cluster. You manage the cluster by using Microsoft System Center Virtual Machine Manager （VMM） 2008 R2. You plan to monitor the environment by using Microsoft System Center Operations Manager 2007. You need to identify when Hyper-V server load exceeds specific CPU and memory thresholds， and you must rebalance the environment accordingly.    What should you do？（）

• A、Configure the Placement settings to maximize resources for each of the Hyper-V servers
• B、Configure Performance and Resource Optimization （PRO） to automatically implement PRO tips
• C、Configure the Placement settings for CPU and Memory as Very Important for each of the Hyper-V servers
• D、Install the Windows Server Operating System Management Pack for Operations Manager 2007， and set the thresholds