Question 8 2. Which of the following is not correct regarding variable costing? Fixed manufacturing overhead is considered a period cost. Variable selling and administrative costs are used to determine contribution margin. Product costs include direct materials, direct labor, and variable overhead. Unit product cost is usually higher than they would be using absorption costing. Question 9 Planning and control are O two methods for recording costs. O two main functions of managerial accounting. separate departments in a manufacturing firm. O independent departments in a manufacturing firm. Question 10 Raw materials, direct labor, and manufacturing (factory) overhead are O indirect costs. O product costs. O period costs. O non-traceable costs