Answer:
d. lower higher
Explanation:
LIFO: It is an inventory valuation method that assume inventory which is placed last in the stock, it will be sold first. Therefore, it is termed as last in, first out.
Average cost method: It is also know as weighted average method, which calculate the cost of total goods produced by dividing total cost of goods available for sales with total number of item produced.
As company C have used LIFO method instead of Average cost method, therefore company have managed to higher inventory turnover, however lower gross profit as compared to company D.