What happens when a file is deleted by a Microsoft operating system using the FAT file system?

What happens when a file is deleted by a Microsoft operating system using the FAT file system?
A . only the reference to the file is removed from the FAT
B . the file is erased and cannot be recovered
C . a copy of the file is stored and the original file is erased
D . the file is erased but can be recovered

Answer: A