Windows NT 4.0 is currently on the system you are using, and you want to install Windows 2000 Professional.  Windows NT 4.0 is currently on an NFTS partition. For some reason you have decided that you are not going to upgrade, but rather, you are going to run this in a dual boot fashion.  What do you need to do? （）

• A、Can’t be done.
• B、You need to put Windows 2000 on a separate partition from Windows NT 4.0
• C、You need to put Windows 2000 on the same partition as Windows NT 4.0. 
• D、You need to upgrade Windows NT 4.0 to SP4.