How is password recovery performed on a Cisco 3300 Series MSE v7.0?

How is password recovery performed on a Cisco 3300 Series MSE v7.0?

A.
Interrupt the boot sequence and modify the BIOS bootloader.

B.
Interrupt the boot sequence and modify the GRUB bootloader.

C.
Reboot using a CD that is imaged with an ISO bootable file to reimage Cisco MSE.

D.
Use the emergency TFTP bootable image.