14. Wolfsburg Wagon (WW) is a small automaker. The accompanying table shows WW's long-run average total cost. Quantity of cars LRATC of car $30,000 NP 20,000 3 15,000 4 12,000 12,000 12,000 14,000 8 18,000 a. For which levels of output does WW experience increasing returns to scale? b. For which levels of output does WW experience decreasing returns to scale? c. For which levels of output does WW experience constant returns to scale