P6.4A (LO 2), AN Writing] The management of National Inc. asks your help in determining the comparative effects of the FIFO and LIFO inventory cost flow methods. For 2022, the accounting records show these data. Compute ending inventory, prepare income statements, and answer questions using FIFO and LIFO. Units purchased consisted of 35,000 units at $3.70 on May 10,60,000 units at $3.90 on August 15 , and 25,000 units at $4.20 on November 20 . Income taxes are 28%. Instructions a. Prepare comparative condensed income statements for 2022 under FIFO and LIFO. (Show computations of ending inventory.) Gross profit: \begin{tabular}{|l|l|} \hline FIFO & $378,800 \\ \hline LIFO & $362,900 \\ \hline \end{tabular} b. Answer the following questions for management in the form of a business letter. 1. Which inventory cost flow method produces the inventory amount that most closely approximates the amount that would have to be paid to replace the inventory? Why? 2. Which inventory cost flow method produces the net income amount that is a more likely indicator of next period's net income? Why? 3. Which inventory cost flow method is most likely to approximate the actual physical flow of the goods? Why? 4. How much more cash will be available under LIFO than under FIFO? Why