What value to the o option is missing from the following command in order to add the contents of the cluster.xml file to the current Pacemaker cluster?

What value to the o option is missing from the following command in order to add the contents of
the cluster.xml file to the current Pacemaker cluster?
cibadmin C o _______ x cluster.xml

A.
status

B.
nodes

C.
resources

D.
constraints

E.
config