A file system stores static application data only. How should this file system be mounted most defensively in /etc/vfstab?

A.
/dev/dsk/c0t3d0s6 /dev/rdsk/c0t3d0s6 /opt ufs 2 yes

B.
/dev/dsk/c0t3d0s6 /dev/rdsk/c0t3d0s6 /opt ufs 2 yes ro

C.
/dev/dsk/c0t3d0s6 /dev/rdsk/c0t3d0s6 /opt ufs 2 yes nosuid

D.
/dev/dsk/c0t3d0s6 /dev/rdsk/c0t3d0s6 /opt ufs 2 yes nosuid,ro