The following information was obtained from Caterpillar's comparative balance sheets. Assume that Caterpillar's 2017 income statement showed depreciation expense of $4,000 and a net income of $50,000. Caterpillar Comparative Balance Sheets Accounts Cash Accounts receivable Inventory Prepaid Rent Long-term investments Plant assets Accumulated depreciation Accounts payable Income tax payable Common stock Retained earnings Dec. 31, 2017 $ 20,000 $ 40,000 $ 50,000 $ 5,000 $ 20,000 $ 150,000 $ 50,000 $ 25,000 $5,000 $ 121,000 $ 84,000 Dec. 31, 2016 $ 10,000 $ 37,000 $ 45,000 $ 7,000 $ 34,000 $ 100,000 $ 46,000 $ 20,000 $ 6,000 $ 100,000 $ 61,000 Calculate the net cash flow from operating activities using the indirect method. (If you cannot see the table above please email me during the exam and I will forward it to you.) Select one: O a. $44,000 b. $52,000 c. $48,000. O d. $46,000