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Ritter Corporation's accountants prepared the following financial statements for year-end 2019: (Do not round intermediate calculations.) RITTER CORPORATION Income Statement 2019 Revenue $ 870 Expenses 625 Depreciation 102 Net income $ 143 Dividends $ 123 RITTER CORPORATION Balance Sheets December 31 2018 2019 Assets Cash $ 67 $ 89 Other current assets 177 194 Net fixed assets 382402 Total assets $626 $685 Liabilities and Equity Accounts payable Long-term debt Stockholders' equity $ 127 152 347 $ 149 169 367 Total liabilities and equity $626 $685 a. What is the change in cash during 2019? b. Determine the change in net working capital in 2019. c. Determine the cash flow generated by the firm's assets during 2019. a. b. Chan Change in cash Change in net working capital c. Cash flow from assets