Hello, answer A and B are correct. However, I am having dificulty calculating the correct answer for C. I greatly appreciate your help. Thank you.

The Friendly Sausage Factory (FSF) can produce hot dogs at a rate of 4,750 per day. FSF supplies hot dogs to local restaurants at a steady rate of 390 per day. The cost to prepare the equipment for producing hot dogs is $68. Annual holding costs are 50 cents per hot dog. The factory operates 290 days a year. a. Find the optimal run size. (Do not round intermediate calculations. Round your answer to the nearest whole number.) Answer is complete and correct. b. Find the number of runs per year. (Round your answer to the nearest whole number.) Answer is complete and correct. c. Find the length (in days) of a run. (Round your answer to the nearest whole number.) (x) Answer is complete but not entirely correct