When installing Oracle Grid Infrastructure 12c, which three options exist for the configuration of Grid naming Service (GNS)? 

Answer options:

A. using Shared GNS for the leaf nodes and local GNS for the hub nodes in a Flex Cluster
B. using Shared GNS running on another cluster
C. using Shared GNS for the hub nodes and local GNS for the leaf nodes in a Flex Cluster
D. creation of a new GNS for this cluster
E. using DHCP to assign Node Virtual IP addresses for nodes in the cluster

ADE