What does the command grub-install /dev/sda do?
A. GRUB creates partitions on the device /dev/sda to be used with Linux.
B. GRUB sets the default BIOS boot device to /dev/sda.
C. GRUB installs all required files and configures the boot loader on device /dev/sda.
D. GRUB recompiles the Linux Kernel and installs it on the Master Boot Record of device /dev/sda.