LPI Exam Questions

What entry in the NFS access control file will allow all computers within the domain foobar.net read

What entry in the NFS access control file will allow all computers within the
domain foobar.net read-only access to the directory, /usr/local/backup?

A.
/usr/local/backup *.foobar.net(ro)

B.
/usr/local/backup read_only=foobar.net

C.
read_only=/usr/local/backup foobar.net

D.
*.foobar.net /usr/local/backup options=!write

E.
foobar.net:/usr/local/backup