Retu The following table lists the components needed to assemble an end item, lead times, and quantities on hand. Item End B N TI ONI wn Lead time (wk) 1 2 10 10 12 30 Amount on hand Click here for the Excel Data File End Item B (2) D (3) F ( 3) G (2) E (2) H (4) E (2) E (2) a. If 20 units of the end item are to be assembled, how many additional units of E are needed? (Hint You don't need to develop an MRP plan to determine this.)