a) Determine the net cash flows for periods 1 through 3 for a firm with the following transactions: $1,000 spent in period 1 and $2,000 spent in period 2 to produce goods to be sold in the following periods, sales of $2,000 in period 2 and $4,000 in period 3, one. half of all sales are in cash with the other half collected in the following period. Use the following answer format Period 1 2 3 Sales Change in accounts receivable Cost of goods sold Change in inventories Net cash flow b) What are the overall changes in working capital resulting from the following changes? $300 increase in inventories, $150 increase in accounts payable, $120 decrease in accounts receivable, $60 decrease in other current assets, $150 decrease in other current liabilities Use the following answer format I Increase in inventory Decrease in accounts receivable Decrease in other current assets Increase in accounts payable Decrease in other current liabilities Net changes in working capital