Instruction: Read the problem and give your objective answer. Problem: A Yanbu job shop has four departments-machining (M), dipping in a chemical bath (D), finishing (F), and plating (P) assigned to four work areas. The operations manager, Ahmed, has gathered the following data for this job shop as it is currently laid out (Plan A). Workpieces moved per week between pairs of work areas, are: It costs $0.50 to move 1 workpiece 1 foot in the job shop. Ahmed's goal is to find a layout that has the lowest material handling cost. Question: Which of the following layout decision (Plan A, Plan B, or Plan C) is the most efficient one? Prove your answer. Plan A Distance Between Work Areas in Feet Plan B Switch departments finishing (F) and plating (P). Plan C Switch milling (M) and drilling (D)