Answer:
To properly calculate this question, the price index was not 112 but 1.12. Using the correct price index, the answer is C. $394,080
Step-by-step explanation:
To calculate the ending inventory of RF Company, we have to first calculate the inventory at year-end (December 31st) divided by the price index.

Second, we subtract the sales of the year from the inventory at year-end.

To calculate RF Company's ending inventory, we have;

Therefore, RF Company's ending inventory is $394,080