Identify the inflection points and local maxima and minima of the graphed function. Identify the open intervals on which the function is differentiable and is concave up and concave down. y = 2x + sin 4x, - ; Exs- Find the inflection point(s). Select the correct choice below and, if necessary, fill in the answer box to complete your choice. O A. The point(s) is/are (Type an ordered pair. Use a comma to separate answers as needed.) O B. There are no inflection points. w/ y