According to BOM and MRP, to ensure normal production, does material O need to be ordered? If an order is needed, when should it be placed? What is the order quantity? Figure 1. Bill of materials Table 1. Material requirement Planning of X
A． There is no need to place an order B． 4th week, 10 C．4th week, 40 D． 5th week, 40 E． 5th week, 10
