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

A.
RCP forces a developer to define all columns explicitly.

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

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

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

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

Explanation: