Your computer runs Microsoft Windows XP Professional. You share your computer with two other co-workers. You purchase a new computer. You install Microsoft Windows Vista on the new computer. You need to migrate the following content from the old computer to the new computer: All system and program settings All users settings Only the content in the C:/Appdata folder Which tool should you use?（）

• A、A
• B、B
• C、C
• D、D