Your Windows 2000 Professional computer contains a single hard disk configured as a single partition. You want to move a folder named Sales under a folder named Corp on your computer.  You want the files in the Sales folder to remain compressed after moving the folder. You want the files in the Corp folder to remain uncompressed. You want to ensure that the files are recoverable in case of any disk problems. You also want to move the files with the least amount of administrative effort.   What should you do？（）

• A、Copy the Sales folder to the Corp folder. Do nothing further.
• B、Backup the Sales folder. Move the Sales folder to the Corp folder.
• C、Compress the Corp folder. Then copy the Sales folder to the Corp folder.
• D、Move the Sales folder to a second computer. Then move the Sales folder to the Corp folder.