HW Score: Question 16, 60.44%, 18.13 of O 4.3.69 30 points Part 1 of 2 X Points: 0 of Save Determine the intervals on which the following function is concave up or concave down. Identify any inflection points. f(x) = In (6x2+1) . . . Determine the intervals on which the following functions are concave up or concave down. Select the correct choice below and fill in the answer box(es) to complete your choice. (Simplify your answer. Type your answer in interval notation. Use a comma to separate answers as needed. Use ascending order.) O A. The function is concave up on and concave down on O B. The function is concave up on and the function is never concave down. O C. The function is concave down on and the function is never concave up