ABC Corporation's transactions for the year ended December 31, 2018 included the following: Reduced accounts receivable by 10,000 Increased accounts payable 20,000 Purchased real estate for 35,000 cash which was borrowed from a bank Sold non-trading investments for 30,000 Paid dividends of 10,000 Issued ordinary shares for 5,000 Purchased machinery and equipment for 12,000 cash ABC's net cash used in investing activities for 2018 was a. 18,000 b. 25,000 c. 17,000 d. 7,000