You are designing a test environment that uses Hyper-V. The test environment must enable testers to perform the following tasks： Quickly switch between running states. Re-create a specific state or condition. Return the state of the environment to a specific point in time. Recover from a faulty software update by using the fastest method. You need to ensure that the test environment meets the requirements.   What are two possible tools that you can use to achieve this goal？（）

• A、Hyper-V Manager
• B、Microsoft System Center Data Protection Manager （DPM） 2007 with SP1
• C、Microsoft System Center Virtual Machine Manager （VMM） 2008 R2
• D、Microsoft System Center Configuration Manager （SCCM） 2007 with SP3