What upgrade paths does Windows XP support

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What upgrade paths does Windows XP support

A. XP Home Edition and XP Professional are available in full and upgrade versions. If you're upgrading from a qualifying OS, you can purchase the less-expensive upgrade version; otherwise, you need to purchase the full version. However, even if you purchase the full version, XP doesn't support all upgrade paths. Review the following table to determine whether XP supports your upgrade path:

Current Version    Win XP Home    Win XP Pro
Win 3.1/3.11    No    No
Windows 95    No    No
Windows 98/98SE    Yes    Yes
Windows ME    Yes    Yes
Windows NT 3.51    No    No
Windows NT 4.0    No    Yes
Windows 2000 Pro    No    Yes
Windows XP Home    N/A    Yes
Windows XP Pro    No    N/A