17. Refer back to problem 16. Suppose that in addition to the usual precedence constraints, there are two zoning constraints within the trim line. First, work elements K and L should be assigned to the same station; both use a common component, and assigning them to the same station conserves storage space. Second, work elements H and J cannot be performed at the same station.a. Using trial and error, balance the line as best you can.b. What is the efficiency of your solution?