Inventory holding cost represents the economic cost associated with maintaining inventory over time. Its components commonly include the cost of capital tied up in inventory, storage-related expense, insurance, taxes where applicable, deterioration, shrinkage, and the risk that inventory will lose economic value before it can be sold or consumed. Obsolescence cost therefore belongs directly within the holding-cost category.
Obsolescence occurs when inventory becomes outdated, technologically superseded, unfashionable, expired, or otherwise less valuable while it remains in stock. The longer inventory is held, the greater the exposure to this risk. For products with rapid technology changes, short life cycles, expiration dates, or volatile consumer preferences, obsolescence can represent a substantial portion of total inventory carrying cost.
The other choices relate primarily to replenishment or acquisition activities. Buyer time is associated with placing and managing orders. Receiving cost occurs when incoming material is processed. Transportation cost concerns product movement and, depending on the inventory model, can form part of the fixed replenishment or logistics cost.
Accordingly, C is the correct answer because obsolescence results specifically from carrying inventory over time. This classification is also consistent with standard supply-chain inventory-cost treatment.
Reference Topic: Inventory and Warehousing — Inventory Carrying and Holding Costs.
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