Which of the Following Tasks Are Parts of a Hypervisor's

Which of the following tasks are parts of a hypervisor's responsibility?

A) Create filesystems during the installation of new VM guest operating systems.
B) Provide host-wide unique PIDs to the processes running inside the VMs in order to ease interprocess communication between virtual machines.
C) Map the resources of virtual machines to the resources of the host system.
D) Ensure isolation and eliminate any interference between virtual machines.
E) Manage authentication to network services running inside a virtual machine.