4. You read that companies should use the specific-unit-cost method to most accurately value items that have been sold and transferred to cost of goods sold, yet most companies do not use this method. Why not? 5. A fire destroyed the inventory of Bronk Supplies, but the accounting records were saved. The beginning inventory was $31,500, purchases for the period were $68,250, and sales were $120,000. Bronk's customary gross margin is 30 percent of sales. Use the gross margin method to estimate the cost of the inventory destroyed by the fire