You have a computer named Computer1 that runs Windows 7. Computer1 uses an NTFS-formatted USBdrive that has ReadyBoost enabled. You need to modify the amount of space that ReadyBoost reserves onthe USB drive. What should you do?（）

• A、Open Computer and modify the properties of the USB drive.
• B、Open Performance Information and Tools and run disk cleanup.
• C、Open Devices and Printers and modify the properties of the USB drive.
• D、Open Device Manager and modify the properties of the USB device.