2. Please show all work step by step and formulas used to get answers in detail

Problem 2 A job shop has four work centers: A, B, C, and D that are currently located in an L-shaped facility as in locations 1,2,3, and 4 as shown: The distance in meters between each pair of locations are as follows: The loads moved between each pair of work centers per week are as follows: Material handling cost is $2 per load per meter. a. What is the total material handling cost per week for the current layout? a. Propose a revised (best) layout by switching the locations of some centers. What would be the total materials handling cost for this revised layout