The Inventory Records of Martin Corporation Reflected the Following Information

The inventory records of Martin Corporation reflected the following information for the month of August:
$$\begin{array} { l l c c } \text { Date } & { \text { Transaction } } & \text { Number of Units } & \text { Unit Cost } \\8 / 1 & \text { Beginning inventory } & 400 & \$ 5 \\8 / 3 & \text { Purchase No. 1 } & 400 & \$ 5 \\8 / 5 & \text { Sale No. 1 } & 600 & \\8 / 7 & \text { Sale No. 2 } & 100 & \\8 / 11 & \text { Purchase No. 2 } & 1,000 & \$ 7 \\8 / 17 & \text { Sale No. 3 } & 700 & \\8 / 19 & \text { Purchase No. 3 } & 1,000 &\$ 7 \\8 / 21 & \text { Sale No. 4 } & 600 & \\8 / 28 & \text { Sale No. } 5 & 600 & \\8 / 29 & \text { Purchase No. 4 } & 1,200& \$9 \\8 / 30 & \text { Ending inventory } & & \end{array}$$ A.Determine the amount of the ending inventory and cost of goods sold under each of the following methods assuming the periodic inventory system. $$\begin{array} { lcccl } \text { Method} & \text { Ending } & \text { Cost of Goods Sold } \\ & \text { Inventory} & \\\text { a. Weighted-average} & \$ & \$ \\\text {b. FIFO } & \$& \$ \\\text {c. LIFO } & \$ & \$\end{array}$$ B.Why would cash flow considerations relate to the choice of an inventory method?