For Questions D, E, and F, assume the following per unit costs for direct materials and direct labor. Also, assume the marketing department suggests the following sales prices for each product. Screws Bolts Tool Chests Aluminum Sheeting Direct Materials Cost Direct Labor Costs Suggested Sales Price $0.20 $0.55 $2.00 $9.50 $25.50 $36.25 $70.00 $100.00 $220.00 $60 $220 $520.00 D. Which product should no longer be produced by the company? Why? E. Please calculated the per unit profit margin for each product? Which one product has the highest profit margin? F. If all units produced are sold, is the product with the highest per unit margin the most profitable product for the company? Why or why not?