This exercise provide you with an opportunity to test your understanding of the work covered in lesson 4 and will not count any marks. The material loading charge is designed to cover: Question 1Select one: a. The invoice price and a profit margin on the materials only b. The cost of carrying and invoice price of material only c. The cost of ordering, invoice price of material, and a profit margin on the materials only d. The cost of ordering, handling and carrying materials in inventory, plus a profit margin on the materials themselves