Let g(x) = 3(x-1)2/3 - x. Which of the following statements is true?
◦ g has a local maximum at (9, 3) and a local minimum at (1, -1).
◦ g is increasing on the interval (-∞, 9).
◦ g is decreasing on the interval (1, 9).
◦ g has a local maximum at (1, -1) and a local minimum at (9, 3).
◦ g is decreasing on the interval (-∞, 9).