the correct answers are circled but i am unsure as to how to determine the answers

Use the following information to answer questions 16-18: A company had the following cash flows for the year: Purchased land, Borrowed from a local bank, Paid employee salaries, Issued common stock, Paid dividends, Sold equipment, Sold services to customers, $ 12,000 20,000 10,000 15,000 4,000 8,000 24,000 16. What was the net cash provided by (used in) Operating Activities? A. $10,000 B. $2,000 C. $22,000 (D. $14,000 17. What was the net cash provided by (used in) Investing Activities? A. $4,000) B. $11,000 C. $19,000 D. $8,000 (paid dividends) 18. What was the net cash provided by (used in) Financing Activities? A. $35,000 B. $31,000 C. ($4,000) D. $1,000