I'll go.
I think it mostly will get down to price. If the allowance prices are significantly different between two countries, I think there will be political hurdles to initiate in trading. One system would essentially significantly reduce the price of another. If you had a situation whereby Canada's targets were significantly more aggressive and importantly all the other design elements led to a much higher carbon price, I think there would be some barriers to trade. You have to look at the final outcome and what people anticipate the overall program design will look like and what the overall price might be.
Thank you.