Problem 2. A small toy robot is assembled from six parts: a body, a head, two arms, and two legs. The firm uses a one level bill of materials ("one-level" means body, head, arm, and leg are at the same level) to assemble this product. The number of parts on hand and the lead times (weeks) to obtain more parts are shown below. There are no parts on order On Hand Lead Time Body Head Arm Leg 80 Toy robot a. Assume that an order for 200 robots is received now for delivery at the beginning of week 4 and assemble the parts once they are all available. Construct a complete materials plan for the robots. What should be ordered immediately to implement the plan? [I don't have an Excel template for you now, so you may build your own sheet b. The customer has called and asked if he could receive a portion of the 200 robots as soon as possible. How many robots can be assembled and delivered to him ASAP, and when would they arrive? c. The supplier of heads has just sent an e-mail that said it will take two weeks to deliver the heads instead of one week. What effect will this have on your materials plan from part a