How does reducing prices of stock impact Gross Profit when using FIFO?

When using the FIFO (First-In, First-Out) method for inventory valuation, the cost of goods sold (COGS) is calculated based on the oldest inventory costs. If stock prices are reduced, this typically means that the costs associated with the goods sold are lower (if the new prices are reflective of current market conditions), which should lead to a decrease in COGS if older inventory is sold at these reduced prices.

In this context, if prices are reduced but the older, higher-cost stock remains on the books for a longer period in a stagnant price environment, the actual cost of those older inventory items would still be applied to COGS. This creates a scenario where the cost of sales are overstated, as higher costs from the older inventory offset the lower revenues from reduced prices. This discrepancy leads to a situation where gross profit appears to be lower than it actually is, resulting in gross profit being understated.

Thus, the correct answer explains that gross profit is understated due to the inaccurate representation of cost of sales when stock prices are reduced but the older, higher costs are still being utilized in accounting under FIFO.