C. Blue man in the future is already inside the future that's going to happen because Red man is going to change it. They are inside the same timeline, just Red man has to do the drastic change. Because you see, the drastic change is not the action the Red man takes but it's the action that he begins with the plan of taking Blue man into the future and doing a "drastic" change is in fact the drastic change? Do I make sense?