So that's just gonna be one. So let's see, this is going to be negative four minus five, which is negative nine. So right over here, g prime is equal to negative nine. And so we know over this whole interval, since it's to the left of this critical point, we know that g prime of x is less than zero. And so our function itself is decreasing over this interval. And so we know we need to go from increasing to decreasing. So you can already say, well we can't go from increasing to decreasing at this critical point because we're already decreasing to the left of it.