Which feature can you use to improve the performance of data transformation in the Extract, Transform and Load (ETL) process?

Which feature can you use to improve the performance of data transformation in the Extract, Transform and Load (ETL) process?
A . Service Adaptation Description Language (SADL)
B . Process Agent Framework (PAF)
C . ABAP Messaging Channels (AMC)
D . ABAP Managed Database Procedures (AMDP)

Answer: D