While booting an Intel 64-bit Debian UEFI desktop from power up, the prompt ts0> was displayed, indicating the bootloader failed. Which of the following will complete the boot process to a GRUB2 menu?

Option A likely specifies incorrect partition identifiers or an incomplete command sequence that would fail to load the 'normal' module and restore the GRUB2 menu.

From a GRUB2 rescue prompt, Option B correctly uses 'set root=(hdX,gptY)', 'set prefix=(hdX,gptY)/boot/grub', and 'insmod normal' followed by 'normal' to locate the GRUB2 files, load the full GRUB2 environment, and present the boot menu. This is the documented recovery sequence for a UEFI GRUB2 rescue shell where the bootloader lost its path references.

Option C likely uses wrong device paths or incorrect GRUB2 module references that do not correspond to the UEFI partition layout, preventing successful boot menu display.

Option D likely contains commands appropriate for a legacy BIOS GRUB environment or incorrect syntax that is incompatible with the UEFI GRUB2 rescue context.