The Nova Scheduler is the component in OpenStack that is responsible for launching instances (virtual servers) and deciding in what physical machines (hosts, nodes) they should be launched.

Two of the main resources that the Nova Scheduler has into account when making scheduling decisions are: CPU (e.g., number of cores) and Memory (e.g. GB of RAM).

CPU and Memory are allocated following an optimistic approach employing overcommit (i.e., possibly allocating VMs so that the total of requested resources is actually higher than the available physical resources in the hosts/nodes).

What is the correct set of overcommit ratios used by the Nova Scheduler for CPU and Memory?

(select the option that best fits the question).