7. In a period of rising prices, four accountants have recorded the cost of sales of a precious metal. One accountant has used the FIFO method of inventory valuation and one has used the LIFO method. The other two accountants have used an average cost method, using the periodic and cumulative weighted average basis respectively. The gross profits recorded by the accountants were as follows: Recorded gross Accountant profit Archie 2,600 Brian 3,400 Charlie 4,500 Dave 5,230 Which accountant was using the LIFO method of inventory valuation? A. Archie B. Brian c. Charlie D. Dave