CompTIA A+ 220-902 Question D-80

Which of the following statements is true about XP mode in Windows 7?

A. Windows XP mode was only available in Windows Vista and it is not available in Windows 7.
B. Only the Professional and the Ultimate versions support Windows XP mode.
C. All versions of Windows 7 support Windows XP mode when the feature is installed.
D. Only the Ultimate version of Windows 7 supports Windows XP mode.