Flectro Fans has ust received an order for one thousand 20 - inch fank due whek 7. Fach fag oonsists of a houllig assembly, Two grilts, a fan assembly, and an eleutrical unit. The hoursing assembly consins of a frame, two tupports, and a hanele. The fan assembly consests of a hub and flve biades. The electrical unit toinsists of a motot, a swith, and a knob. The following toble ives lead times, on-hand liventory, and scheduled receipts. a) Construct a broduct structurt. b) Cohstruct a time phased prodact structure. c) Preaare a net materia requirements alan