What can you do with shared hierarchies? Note: There are 2 correct answers to this question.

What can you do with shared hierarchies? Note: There are 2 correct answers to this question.
A . Access hierarchies created in external schemas
B . Enable SQL SELECT statements to access hierarchies
C . Provide reusable hierarchies for drilldown in a CUBE with star join
D . Provide reusable hierarchies for drilldown in a CUBE without star join

Answer: B D