The correct answer is B. NTFS.
FAT 16 is a file system developed by Microsoft for MS-DOS and OS/2. It was the first widely used file system for personal computers. FAT 16 has a number of limitations, including a maximum volume size of 2 GB and a maximum file size of 4 GB.
FAT 32 is a file system developed by Microsoft as an improvement over FAT 16. It supports larger volumes and files than FAT 16, but it is not as efficient as NTFS.
NTFS is a file system developed by Microsoft for Windows NT. It is a more advanced file system than FAT 16 or FAT 32, and it offers a number of advantages, including support for larger volumes and files, better security, and better performance.
Windows 2000 Server uses the NTFS file system.