Thank you.
This was a negotiated part of the agreement, as these two terms were agreed to by Canada and the United States as ways of measuring the date of shipment. The option for some of this flexibility to the exporters taking it into option B provinces is that those exporters, when they have a quota allocation, will have a flexibility of about 12% of their export allocation, carried forward and carried back. If a train were delayed, they would be able to qualify to have a credit for that allocation bringing forward.
Under option A provinces, there is the surge provision that allows a 10% overage before surcharges hit. This would allow that kind of flexibility for the province itself under option A.