Assembly - line workers' wages Depreciation on factory equipment Caps for bottles Plastic bottles Reconfiguring the assembly line Salaries of salespeople Customer support hotline Salaries of research scientists Delivery expenses Customer toll free order line $56,200 $35,200 $3,000 $52,100 $123,400 $63,700 $12,000 $65,000 $40,300 $8,900 What is the total cost for the production category of the value chain? A. $308,600 B. $459,800 C. $146,500 D. $148,600