Ritter Corporation's accountants prepared the following financial statements for year-end 2019: (Do not round intermediate calculations.) RITTER CORPORATION Income Statement 2019 900 Revenue $ Expenses Depreciation 640 105 Net income $ 155 Dividends $ 135 RITTER CORPORATION Balance Sheets December 31 2018 2019 Assets Cash $ 70 $ 95 200 Other current assets 180 Net fixed assets 385 405 Total assets $635 $700 Liabilities and Equity Accounts payable Long-term debt Stockholders' equity $ 130 155 350 $ 155 175 370 Total liabilities and equity $635 $700 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. Change in cash b. Change in net working capital C. Cash flow from assets