(23. At x - 3, the function given by S(x) - 1 05 - 9: * {} is (A) undefined (B) continuous but not differentiable (C) differentiable but not continuous (D) neither continuous nor differentiable (E) both continuous and differentiable 23. The graph of y = /(x) is shown in the figure above. On which of the following intervals are dy dx and dx ?