Hello, can you please assist me with my class discussion?

READ - Chapter Four - Costing methods WRITE - a minimum of 200 words addressing the following questions: Describe three issues/problems that a company could encounter when trying to determine the actual cost of a good or service to be used in the cost of goods sold. For each of your issues, provide an example of a company or industry where these issues could be present. *My instructor is really big on citing and asking questions to classmates. Thanks