Ritter Corporation's accountants prepared the following financial statements for year-end 2019: (Do not round intermediate calculations.) RITTER CORPORATION Income Statement 2019 Revenue $880 Expenses 630 Depreciation 103 Net income $ 147 Dividends $ 127 RITTER CORPORATION Balance Sheets December 31 2018 Assets Cash $ 68 Other current assets 178 Net fixed assets 383 2019 $ 91 196 403 Total assets $629 $690 Liabilities and Equity Accounts payable Long-term debt Stockholders' equity $ 128 153 348 $ 151 171 368 2019 RITTER CORPORATION Balance Sheets December 31 2018 Assets Cash $ 68 Other current assets 178 Net fixed assets 383 $ 91 196 403 Total assets $629 $690 Liabilities and Equity Accounts payable Long-term debt Stockholders' equity $ 128 153 348 $ 151 171 368 Total liabilities and equity $629 $690 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. $ 23 Change in cash b. Change in net working capital C. Cash flow from assets $ 18