This cannot be accepted as a correct justification. All right, let's read the other ones. The second derivative of g is increasing at x equals negative two. Well, no, that doesn't justify why you have an inflection point there. For example, the second derivative is increasing at x equals negative 2.5. The second derivative is even increasing at x equals negative one, but you don't have inflection points at those places. So I would say this doesn't justify why g has an inflection point.