Develop a chase, level, and mixed production plan for the following data. Assume that each unit produced requires 4 hours labor time, workdays are 8 hours, workweeks are 40 hours, and workers work 20 days per month. Round up for the number of workers each month. For the mixed plan, use 3-period demand averages. Use full-time workers as much as possible, up to a full-time workforce of 4 workers. Allow up to 10 hours overtime per worker per week prior to hiring any part-time workers. Part-timers can work up to 10 hours per week.