If the second derivative at that point was positive, then we would be concave upwards, and then if our derivative is zero there, we'd say, okay, that's a relative minimum point. But this is indeed true. The second derivative is negative at x equals negative four, which means we are concave downwards, which means that we are a upside-down u, and that point where the derivative is zero is indeed a relative maximum. So let me, so that is the answer, and we're done. But let's just rule out the other ones. H increases before x equals negative four. That is indeed true.