Which statement is true about the command shown below?

Which statement is true about the command shown below?
[root@server1 ~]# mount -a -O no_netdev

A.
It mounts all file systems that have the option _netdev specified in the Options field in the
/etc/fstab file.

B.
It mounts only ext3 file systems that have the option _netdev specified in the Options field in the
/etc/fstab file.

C.
It mounts only msdos file systems that have the option _netdev specified in the Options field in
the /etc/fstab file.

D.
It mounts all file systems except those with the option _netdev specified in the Options field in
the /etc/fstab file.