Which Statement Best Describes the Relationship Between System Roles and Custom

Multiple Choice

Which statement best describes the relationship between system roles and custom roles?

A) System roles cannot be edited and custom roles can be edited.
B) A custom role is created by editing a system role.
C) A custom role is created by copying a system role, renaming it and editing at least one of the privileges.
D) Any number of custom roles can be created within each system role.