Leonard's company purchases a window hardware from William's Hardware Co and sells to the market. Leonard is also considering manufacturing the product internally. William's Hardware Co. charges $5 per unit, with a minimum order of 3,000 units. If Leonard manufactures the product in-home, the process setup fee could be $18,000 and then $3 per unit for labor and materials. a) Draw and upload a graph illustrating the crossover (or indifference) point. b) Determine the number of units where either choice has the same cost. Show calculation details in the uploaded file. (Non-anonymous question ) (20 Points)