The required input into an MRP system is: O A Bill-of-materials OB On-hand inventory C. Master schedule D. All of the above Based on the following data, and the begining inventory of 40 units, complete a net planned order release schedule for all weeks by using a Lot-for-Lot (JIT) appraoch and answer the following question: 8. 9 10. 12 11 0 10 80 Period (week) 1 2 4 6 7 Gross Req 30 0 40 0 30 60 20 On-Hand Inv. Net Reg Order Receipt Order Release What are the on-Hand inventory for weeks 1 and 2? O A. 40. 40 OB. 30, 30 OC.O.O OD. 10.10