In order to use the option dom0_mem to limit the amount of memory assigned to the Xen Domain-0, where must this option be specified?
A.
In its Makefile, when Xen is built.
B.
In the configuration file /etc/xen/Domain-0.cfg, when Xen starts.
C.
In the bootloader configuration, when Xen is booted.
D.
In its .config file, when the Domain-0 kernel is built.
E.
In any of Xen’s global configuration files.