Which of the following commands will mount a USB device at /dev/sdb1 into the /media/usb directory, assuming a VFAT filesystem for the USB drive?

Which of the following commands will mount a USB device at /dev/sdb1 into the /media/usb directory, assuming a VFAT filesystem for the USB drive?
A . mount -t vfat /dev/sdb1 /media/usb
B . mount -t usb /dev/sdb1 /mnt/usb
C . mount -t vfat /dev/sdb1 /mnt
D . usbmount /dev/sdb1 /mnt/usb

Answer: A