what is the planned order release for (1) item A in week 4, (2) item B in week 4, (3) itsm A in week 3 and (4) Item C in week 2??

thank you so much

MRP for two end items X and Y is to be completed. The gross requirements for Item X are 110 at the beginning of Week 6 and 200 at the beginning of Week 7. The gross requirements for Item Y are 40 at the beginning of Week 6 and 130 at the beginning of Week 7. The product structure for the two items is given below. [LT 2] LT 1) B (2) A (2) [LT 1) C (1) ILT 2] AX) ILT 11 [LT 2] C (1) LT2) Item X requires 2 units of A and one unit of C. Item Y requires 1 unit of A and two units of B. Each unit of B requires one unit of C. Note that items A and C appear on both product structures. The lead time for each item is specified in the product structure: The lead time for Items X, B and C is 2 weeks; for Items Y and A is 1 week. The on-hand inventory for item A at the beginning of week 1 is 139