单选题：To mount a usb device located at /dev/sdb to /mnt/usb, suppose t

To mount a usb device located at /dev/sdb to /mnt/usb, suppose the file format is fat32. Which of the following shell scripts is correct?@[A](1)
A. mount –t vfat /dev/sdb /mnt/usb
B. mount –t fat32 /dev/sdb /mnt/usb
C. mount –t vfat /mnt/usb
D. mount –t fat32 /mnt/usb





A.mount –t vfat /dev/sdb /mnt/usb
B.mount –t fat32 /dev/sdb /mnt/usb
C.mount –t vfat /mnt/usb
D.mount –t fat32 /mnt/usb


答案：A