None Oltre above Question 20 2 pts Which of the following costs is not considered to be a product cost? O Wages paid to production workers O Raw materials costs used in production O Depreciation on delivery vehicles for shipping to customers O Salaries paid to manufacturing supervisors Question 21 5 pts The following was provided by Targaryen Inc.: 2018 2019 2020 $16 $15.75 Sales price per unit Contribution margin per unit $15.25 $8.50 $9 $8.40