A company makes the following table which presents the problems in deliveries in January, February, March. Problem type Late delivery Early delivery Shipment batch too large Shipment batch too small Excessive defects in shipment Wrong items delivered January February March 120 90 40 12 15 20 57 60 65 56 50 30 13 10 9 4 5 4 a) Create a Pareto chart using the 3-month data. b) If you wanted to find solutions to delivery problems, where would you begin and why? c) Does your answer in part b change if you focus on each month separately? Why or why not