Find the absolute maximum and absolute minimum values of the function, if they exist, over the indicated interval. When no interval is specified, use the real line (-∞, ∞).
f(x) = -x3 - x2 + 5x - 9; (0, ∞)
◦ No absolute maximum; absolute minimum: -14
◦ Absolute maximum: -9; absolute minimum: -14
◦ Absolute maximum: -6; no absolute minimum
◦ No absolute extrema