A sausage factory can produce European wieners at a rate of 550 kg per day. It supplies wieners to local stores and restaurants at a steady rate of 80 kg per day. The cost to prepare the equipment for producing European wieners is $13. Annual holding cost is $3 per kg of wieners. The factory operates 290 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)