left Z / Assignment 2 Decide if the given value of x is a critical number for f, and if so, decide whether the point for x on f is a local minimum, local maximum, or neither. f( x) = (x + 4)4; x = -4 Select one: O A. Not a critical number. O B. Critical number; maximum at (-4 , 0) O C. Critical number; minimum at (-4 , 0) O D. Critical number but not an extreme point