Your network has a single domain with 1，000 client computers that run Windows Vista. You are planning a deployment of Windows 7. Your company has multiple departments. Only the sales department will use the existing target computers to run Windows 7. You have the following requirements：Migrate the user state for each user. Preserve the file system and existing applications for only the sales department computers. You need to recommend the deployment method that is appropriate for the environment. Which combination of deployment scenarios should you recommend？（）

A. Use the Refresh Computer method for the sales department computers. Use the New Computer method for all other computers.
B. Use the Refresh Computer method for the sales department computers. Use the Replace Computer method for all other computers.
C. Use the Upgrade Computer method for the sales department computers. Use the Refresh Computer method for all other computers.
D. Use the Upgrade Computer method for the sales department computers. Use the Replace Computer method for all other computers.