3) Stark Manufacturing Company had the following account balances for the 2021. Required: Calculate the following: a. Cost of direct materials used b- Cost of goods manufactured c- Cost of goods sold d- Gross margin f-Operating income 3) Stark Manufacturing Company had the following account balances for the 2021. Required: Calculate the following: a. Cost of direct materials used b- Cost of goods manufactured c- Cost of goods sold d- Gross margin f-Operating income