Pls read on hand units correctly!

The product structure tree of a round-top computer desk is given as follows. The demand for the roundtop computer desk is 10 units and these desks are required at the beginning of week 8 . On-hand inventory information is given in the Table 1 as follows. Table 1: On-hand inventorv and lead times The lead time information and scheduled receipts information for the round-top computer desk and components are given in the Table 2 as follows. On-hand inventory information is given in the Table 1 above. Table 2: Lead times and scheduled receibts 1) Make a plan for round-top computer desks and MRPs to have 20 units of round-top computer desks ready at the beginning of week 7 and 10 units of round-top computer desks ready at the beginning of week 8. (Lotfor-lot ordering is used). 2) If the supplier of component D requires the order should be in batch and batch size is 50 units. Make the MRP for item D