You are certain that your kernel has been compiled with ACL support, however, when you try to set an ACL on a file, you get the following output:

% setfacl m user:hugh:r afile.txt
setfacl: afile.txt: Operation not supported

What is the most likely reason for this problem?

A.
There is an error in the command line parameters

B.
There is no user on the system named hugh

C.
The partition has not been mounted with the acl option

D.
The file afile.txt doesn’t exist