Northern Industries had sales of $428,000 in the month of May. Use the retail method to estimate the value of the inventory as of May 31 given the following financial information: (Round cost ratio to four decimal places) Northern Industries Financial Highlights May 1 - May 31 Cost Retail $434,719 $585,100 148,921 170,900 Beginning Inventory Net Purchases (May) Total available for sale O a. $230,435 O b. $253,216 O c. $328,199 O d. $456,812