Problems 1. Bob Stahl, the distribution manager at Forbes Industries, is considering using error addback for his DRP system. To evaluate its use, he compiled data for three periods on a sample product, the Scarlet Tiara. The initial DRP record is given here: Q=60;leadtime=1;SS=10 a. Develop the DRP records above for periods 2 through 4 given demands of 24,38 , and 27 in periods 1,2 , and 3. b. Complete the same records using the error addback method. What differences occur