The CBU for PowerHA offering is designed for AIX and IBM i clients running on which of the following systems?

A.
E870 and E880

B.
E850 and E870

C.
E850

D.
E880

Explanation:
The Capacity Backup (CBU) for Power Enterprise Servers, is an enhanced offering for the IBM Power System
E870, E880, E870C, and E880C servers.
AIX and IBM i clients can purchase a new Power Enterprise server that is designated to be used exclusively for
high availability or disaster recovery. It includes a number of no-charge Elastic CoD memory days defined by
the configuration of the clients existing Power E870, E880, E870C, or E880C production system.
http://www-03.ibm.com/systems/power/hardware/cbu/