The correct answer is D. Interplant demand .
In DRP, gross requirements are driven by demand at distribution points and by requirements created between plants or stocking locations. Among the choices given, interplant demand is the only demand-related input that directly contributes to gross requirements. Order value is financial data, location points identify where inventory may be stored or moved, and shipping schedules show timing of movement; however, they do not by themselves determine gross requirements.
The Planning and Inventory Management material supports this logic by showing that total demand includes internal demand sources such as interplant orders . Exact extract: "Sales forecast/customer orders...
Interplant orders... Engineering requirement... Service demand... Special promotions... Seasonal build-up...
Release build-up... TOTAL." The same section states: "The MPS must cover all demand. The total requirement will depend on factors such as the type of business and internal requirements." The material also explains that gross requirements are the total demand generated from planning calculations.
Exact extract: "Gross requirements - The total demand for assemblies components and raw materials arising from the 'explosion' calculations." Therefore, for this DRP question, interplant demand is the required data because it represents demand generated between locations/plants and is used to determine gross requirements.