In a Resource Pool hierarchy, changes made to resources available to a Parent Pool affect

In a Resource Pool hierarchy, changes made to resources available to a Parent Pool affect:

A.
Sibling Pools

B.
Child Pools

C.
Root Resource Pools

D.
Sibling and Child Pools

Explanation:
Resource Management Guide : Understanding and Managing Resource Pools : What Are
Resource Pools?

Resource pools at the same level are called siblings