In the John Deere "Styro" video: O A. (ii) The operation of a pull system is illustrated. O B. (i) and (iv) C. (iii) Lead times were reduced significantly as a result of implementing a "trucking" function. OD. (iv) Several actions were taken to balance the plant (i.e., spread work evenly among work stations to eliminate bottlenecks). OE. (i) The "plant" started with lot sizes of eight and ended up with lot sizes of one