A manufacturer can simplify the forecasting process by pooling demand forecasts for a product group and then:

A manufacturer can simplify the forecasting process by pooling demand forecasts for a product group and then:
A . averaging total demand and spreading it evenly across all items.
B. disaggregating demand to the item level based on marketing input.
C. disaggregating demand to the item level based on historical proportions.
D. allocating demand to each production site.

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Answer: C