 nine, we're going to see what needs to be done in terms of reducing the coal fraction to keep the temperature below a two degree limit by the year 2200. So initially I'm just going to restore everything to the starting conditions here and we'll run it once and see what happens there. We've got the very high temperature change there. Now we're going to follow the instructions for setting up the model. We're going to set the start time to 2030 which is there. We're going to set the adjust time to 10. We're going to turn on the oil switch and the gas switch and we're going to keep the per capita energy at 74 the whole way across. So we do it like this. Same thing we've done before. Okay, so there we've got that set. We're going to set the F oil new. New oil fraction 2.1. Do the same with gas. So we reduce those to 10.1 and then we have the population limit set at 12. So that's good. Now we're going to explore four different scenarios and in each scenario we're going to do something different with the coal. The first one we're going to keep the coal fraction unchanged. So we have the switch off and we run it. We see what the temperature is and by the end we're at 3.59 degrees temperature change. So that's that's not acceptable. So that one doesn't do it. Now we'll try scenario number or scenario B. So we turn the coal switch on and then we reduce the F coal new to 0.1 and run it. So lower temperature we're using less coal but we're still at 2.66. That's too high. Now we'll change F coal new to 0.05 and run it again and we see we're still up here at 2.36. So we're still above 2. Now let's see what happens if we eliminate coal entirely. Move it to 0 and run it again and here we are and at that point we have still a temperature of 2.05. So that one is very close but it still doesn't quite get us below that two-degree limit. So in this case none of those scenarios works right and that's one of the choices in the question is that none of these above scenarios keeps that temperature below two degrees. The last one comes close but it still doesn't quite get there.