Answer:
True
Step-by-step explanation:
You can compute the amount of materials or components that go into a finished product by expanding its components and then adding them all up. But this is not really efficient when you deal with finished products that add several components at different production stages or levels.
It is always more efficient to store materials' and components' information at every production level. At each production level you will assign each component to its parent including the amount of materials or components added at that level.