What is the purpose of a project in IBM Tivoli Netcool/lmpact V6.1?

A.
It allows for creating subsets of the elements stored in the global repository.
B.
It allows for creating subsets of the elements stored in the Impact repository.
C.
It allows for creating subsets of the elements stored across cluster members.
D.
It allows for creating supersets of the elements stored in the global repository.
Explanation: