help answer a,b,c

The charts below show the process time of 4 products that are run on the same line and the changeover time when switching between products Changeover times are uni-directional: changing from B to D is may not be the same as changing from D to B. All changeovers from D take 6 hours regardless of the next product. Any not specified are 2 hours. a) Determine an efficient order for these 4 products to run. Don't overthink this. Since the question asks for an efficient order (not optimal) there are numerous possible answers. b) Draw the product wheel for the order determined above and determine the period. c) If there were only minimal holding costs and storage capacity for completed products was not a concern, would you change anything? If so, what would you change? The charts below show the process time of 4 products that are run on the same line and the changeover time when switching between products Changeover times are uni-directional: changing from B to D is may not be the same as changing from D to B. All changeovers from D take 6 hours regardless of the next product. Any not specified are 2 hours. a) Determine an efficient order for these 4 products to run. Don't overthink this. Since the question asks for an efficient order (not optimal) there are numerous possible answers. b) Draw the product wheel for the order determined above and determine the period. c) If there were only minimal holding costs and storage capacity for completed products was not a concern, would you change anything? If so, what would you change