Your company has client computers that run Windows XP Professional. You are planning to install Windows 7 Enterprise on the existing client computers. You have the following requirements： Migrate user data and operating system components. Encrypt and password-protect the migration store. You need to design a user state migration strategy that supports the requirements. What should you do？（）
- AUse a hard-link migration store
- BUse a compressed migration store
- CPerform an offline migration by using Windowsold
- DPerform an offline migration by using Windows PE