New cost centers are added to the Entity hierarchy nightly from the ERP system. Identify the two true statements about the ERP system. 

Answer options:

A. It is considered an upstream system.
B. It is considered a downstream system.
C. Because it is used as a source for the Entity dimension, you may not feed entity data back to the ERP system.
D. It may be imported into an existing version using Import.
E. The ERP system feed can be automated using the batch client.

AB