Thank you for the question.
Selectively, yes, and we have demonstration projects going. I'm most excited about projects like Keephills and that we're moving forward; the project is commercial scale. That will result in large reductions of CO2 on the order of a megatonne per year or more. Selectively demonstrate the technology on the commercial side, let's get these projects going, and then we'll truly figure out what the cost is per tonne. As you rightly say, the estimates vary. Only by running it will we be able to nail down those costs.