4. Given the following product tree, explode, ofrset, and determine the gross and net requircments. All lead times are one weck, and the quantities required are shown in parsotheses. The master production schedule calls for 100 As to be available in weeks There are 20 Bs avallable. Alt other on-hand balances -0 . 4. Given the following product tree, explode, ofrset, and determine the gross and net requircments. All lead times are one weck, and the quantities required are shown in parsotheses. The master production schedule calls for 100 As to be available in weeks There are 20 Bs avallable. Alt other on-hand balances -0