What command is used to mount a floppy disk image under /mnt/floppy?

What command is used to mount a floppy disk image under /mnt/floppy?

A.
mount –loop root.img /mnt/floppy

B.
mount -o loop root.img /mnt/floppy

C.
mount root.img /mnt/floppy

D.
mount -1 root.img /mnt/floppy

E.
mount root.img