You use the Flat File Schema Creation Wizard to create a schema for a positional flat file. One of the records in the file contains a tag identifier. When you test a message instance against the schema, you discover that the tag identifier is not removed. You need to remove the tag identifier from the test output. What should you do?

A.
Set the positional offset to exclude the tag identifier.

B.
Set the parent delimiter to {cr}{lf}.

C.
Set the root node delimiter to {cr}{lf}.

D.
Shorten the positional length of the record.