Cheyenne Corp. understated its $2021$ ending inventory by $$31,800.$ Determine the impact this error has on ending inventory, cost of goods sold, and stockholders' equity in $2021$ and $2022.$

Ending inventory in a$)2021?$ b$)2022?$

Cost of Goods Sold in a$)2021?$ b$)2022?$

Stockholders' equity in a$)2021?$ b$)2022?$

answer options include overstated, understated, no affect