How does this affect the associated documents in SAP TM?

You have transferred an SAP ERP sales order to SAP TM. An order-based transportation requirement (OTR) was created which automatically created a freight unit.

You now create an SAP ERP outbound delivery for the sales order which is also automatically transferred to SAP TM to create a delivery-based transportation requirement (DTR).

How does this affect the associated documents in SAP TM? There are 2 correct answers to this question.
A . The OTR is blocked for planning
B . The OTR is consumed
C . The existing freight unit is canceled and a new freight unit is created
D . The freight unit is reassigned from the OTR to the DTR

Answer: B, D