Thank you very much. I'd like to pursue what Mr. Fraser was talking about.
For Mr. Yost and Ms. Thompson, I heard Ms. Thompson say that the government has a zero-tolerance approach, yet I understand we're going to have per se levels set by regulations under Bill C-46 of two nanograms, and five nanograms as well. If the Australians have a presence-absence system, isn't that essentially what a zero-tolerance level would mean? I'm told on the other hand that we're going to have regulations that won't set that, so I'm confused.