Where is a Cluster Aware AIX cluster configuration data stored?

A. A NFS filesystem that is accessible by all nodes

B. A shared disk that is accessible from all nodes.

C. A master copy on one node and the data is replicated to the local disk of the other nodes
D. A shared system pool that is accessible by all nodes

Explanation: The cluster repository disk is used as the central repository for the cluster configuration data. The cluster repository disk must be accessible from all nodes in the cluster and is a minimum of 10 GB in size. Given the importance of the cluster configuration data, the cluster repository disk should be backed up by a redundant and highly available storage configuration.
Reference: https://www.ibm.com/developerworks/community/blogs/cgaix/entry/cluster_aware_aix1?lang=en