Which three statements are true about Server Categorization in Oracle 12c Clusterware? 

Answer options:

A. All server attributes that may be used to determine the server category are discovered automatically by Oracle Clusterware.
B. Different Hub nodes in a flex cluster may belong to separate administrator-defined categories.
C. All hub nodes in a flex cluster belong to the same Oracle-supplied category.
D. A server may be added to only one category using the crsctl utility.
E. All leaf nodes in a flex cluster belong to the same Oracle-supplied category.
F. All server attributes used for categorization are administrator modifiable.

CEF

CE: The SERVER_CATEGORY is the name of a registered server category, used as part of server categorization. Oracle Clusterware standard Clusters and Oracle Flex Clusters have default categories of hub and leaf. F: Server Category Attributes - You define servers into named categories, and assign attributes that define servers as members of that category. Some attributes that you can use to define members of a category describe the state conditions for the server, and others describe the physical characteristics of the server. You can also create your own characteristics to define servers as members of a particular category. References: https://docs.oracle.com/database/121/CWADD/pbmgmt.htm#CWADD92638