A sausage factory can produce European wieners at a rate of 570 kg per day. It supplies wieners to local stores and restaurants at a steady rate of 100 kg per day. The cost to prepare the equipment for producing European wieners is $15. Annual holding cost is $2 per kg of wieners. The factory operates 320 days a year. (Round the final answers to the nearest whole number.) a. Calculate the optimal production run quantity. (Do not round intermediate calculations.) Optimal production run quantity kg b. Calculate the number of production runs per year. No. of production runs per year runs / year c. Calculate the length (in days) of a production run. Length of a production run day(s)