Identify the inflection points and local maxima and minima of the function graphed below. Identify the intervals on which it is concave up and concave down. The curve y = -x - 8x has a point of inflection at (Type an ordered pair. Type a simplified fraction.) Choose the correct answer regarding local maxima and minima. y=- O A. Local minimum: - 26 at x= 1 O B. No local maxima or minima OC. 80 at x= 4 Local maximum: - 28 at x= -2 Local minimum: 3 OD. 28 at x= - 2 Local maximum: 3. 80 at x= 4 Local minimum: - 3 Choose the correct answer regarding concavity