Which is the simplest baseline group combination an administrator could create to upgrade hosts, VMware tools…?

Which is the simplest baseline group combination an administrator could create to upgrade hosts,
VMware tools, and virtual machine hardware to the latest versions using Update Manager?

A.
One baseline group that contains the host upgrade baselines and one baseline group that
contains the VM Hardware and VMware Tools upgrade baselines

B.
One baseline group that contains the host upgrade and vCenter upgrade baselines

C.
One baseline group that contains the host, VMware tools, and VM Hardware upgrade baselines

D.
One baseline group that contains the Data Center upgrade baseline and one baseline group
that contains the VM upgrade baseline