E18-15 (book/statlc) s, Inc. manufactures wheels for bicycles, tricycles, and scooters. For each cost given below, determine if the cost is a product c cost or a period cost. If the cost is a product cost, further determine if the cost is oroduct oost is a prime cost, conversion cost, or both.If the cost is a period cost,further determine if the cost is a direct materials (DM), direct labor (DL), or selling expense or administrative expense (Admin), Cost (a) is answered as a guide (If an Product Product Period DM DLMOH Prime Conversion Selling Admin. Cost a. Metal used for rims b. Sales salaries c. Rent on factory d. Wages of assembly workers