Answer:
b. a rule which requires a company to adjust the cost of its inventory when the market price decreases below the cost.
Explanation:
LCM means lower of cost or market value. It is a rule under which the value of inventory is adjusted to lower of cost or market value. Also, it is a rule which requires a company to adjust the cost of its inventory when the market price decreases below the cost.
Hence, the correct option is a rule which requires a company to adjust the cost of its inventory when the market price decreases below the cost.