Thornton Universal Sales' cost of goods sold (COGS) average $2,000,000 per month, and it keeps inventory equal to 50% of its monthly COGS on hand at all times. Using a 365-day year, what is its inventory conversion period? O a. 13.0 days O b. 16.7 days O C. 14.4 days O d. 11.7 days O e. 15.2 days