What are two advantages of using Runtime Column Propagation (RCP)? (Choose two.)

A.
RCP is not a feature of DataStage.

B.
Only columns used in the data flow need to be defined.

C.
Only columns that are defined as VarChar need RCP enabled.

D.
Sequential files don’t require schema files when using RCP.

E.
Columns not specifically used in the flow are propagated as if they were.

Explanation: