Which three parallel job stages allow you to use partial schemas? (Select three)

A.
Peek stage

B.
Dataset stage

C.
Column Import stage

D.
Sequential File stage

E.
External Source stage

Explanation:
http://pic.dhe.ibm.com/infocenter/iisinfsv/v8r5/index.jsp?topic=%2Fcom.ibm.swg.im.iis.
ds.parjob.dev.doc%2Ftopics%2Fr_deeref_Partial_Schemas.html