Which of the following file systems is from Microsoft and was included with their earliest operating systems?

A.
NTFS

B.
UFS

C.
MTFS

D.
FAT

Explanation:
File Allocation Table (FAT) is a file system created by Microsoft and used for its earliest DOS operating systems.
Incorrect Answers:
A: NTFS is a file system created by Microsoft but it was first used on its Windows NT Server operating systems. NTFS has file and folder level access permissions
and auditing capabilities. It was not used with Microsoft’s earliest operating systems.
B: Unix File System (UFS) is a file system created for the Unix operating system.
C: Multi-Threaded File System (MTFS) is a file system created for the Linux based operating systems.

Dulaney, Emmett and Chuck Eastton, CompTIA Security+ Study Guide, Sixth Edition, Sybex, Indianapolis, 2014, pp 58-59
Stewart, James Michael, CompTIA Security+ Review Guide, Sybex, Indianapolis, 2014, pp 203 http://en.wikipedia.org/wiki/File_Allocation_Table
http://en.wikipedia.org/wiki/Unix_File_System