How can you map the document fields to the custom data collection fields?

You have configured custom data collection and uploaded the forms in maintain onboarding and offboarding document templates for your costumer

How can you map the document fields to the custom data collection fields? Note: There are 3 correct answers to this question
A . Select rule in the mapping type column
B. Use the custom mdf object as the base object column
C. Select direct in the mapping type column
D. Create a business rule
E. Select the fields from the costum MDF object in the target field column

Answer: B,C,E