Which one of the following stages requires a schema file when using Runtime Column Propagation?

A.
Modify Stage

B.
Data Set Stage

C.
Transformer Stage

D.
Sequential File Stage

Explanation:
Explanation/Reference:Reference:
https://www- 01.ibm.com/support/knowledgecenter/SSZJPZ_11.3.0/com.ibm.swg.im.iis.ds.parjob.dev.doc/topic
s/c_deeref_using_rcp_with_sequential_stages.html