Question 10 Not yet answered Marked out of 1.00 P Flag question Which is the correct Cost of Goods formula Select one: O a. Opening stock or inventory+ Purchases+Frieght in- Purchase returns-Purchase Discount-Closing stock O b. Opening stock or inventory+ Purchases-Frieght in- Purchase returns-Purchase Discount-Closing stockgs c. None of them O d. Opening stock or inventory- Purchases+Frieght in- Purchase returns-Purchase Discount-Closing stock