26. From the following transactions, calculate the ending inventory, gross revenue, and the cost of sales using the LIFO perpetual inventory method. May 5 purchased 100 units of inventory for cash for $1500 May 11 purchased 50 units of inventory for cash for $600 May 16 sold 75 units of inventory for cash for $2500 May 30 purchased 50 units of inventory for cash for $250