Which of the following is NOT a cost flow method for inventory?

The method that is not recognized as a cost flow method for inventory is referred to as "Constant average." The commonly accepted inventory cost flow methods include FIFO (First-In, First-Out), LIFO (Last-In, First-Out), and Weighted Average.

In FIFO, the earliest costs incurred for inventory purchases are the first to be recognized as costs when items are sold. LIFO, on the other hand, assumes that the most recently acquired inventory items are sold first, which can be advantageous in times of rising prices as it results in lower taxable income. The Weighted Average method takes an average of all inventory costs to determine the cost of goods sold and the ending inventory, smoothing out price fluctuations over the accounting period.

"Constant average" does not correspond to any established inventory accounting method within financial reporting standards, which is why it is identified as the incorrect choice. Understanding these methods is crucial for accurate inventory management and financial reporting, as they significantly affect the financial statements and tax implications.