Refer to the situation described in BE 9-15. What steps would be taken to report the error

Question:

Refer to the situation described in BE 9-15. What steps would be taken to report the error in the 2018 financial statements?
In BE 9-15
In 2018, Winslow International, Inc.'s controller discovered that ending inventories for 2016 and 2017 were overstated by $200,000 and $500,000, respectively