A. Interrupt the boot process in the GRUB menu and add systemd.unit=single in the kernel line.

B. Execute the following command from the GRUB rescue shell: mount -o remount, ro/sysroot.

C. Interrupt the boot process in the GRUB menu and add systemd.unit=rescue.target in the kernel line.

D. Interrupt the boot process in the GRUB menu and add single=user in the kernel line.

E. Interrupt the boot process in the GRUB menu and add systemd.unit=single.target in the kernel line.

F. Interrupt the boot process in the GRUB menu and add init=/bin/bash in the kernel line.