I have spesific questions with regard to this question. Please answer my questions :)

1) Treasury stocks are decreasing in the question since paranthesis means minus. Normally, company should sell it's treasury stocks to earn money but in this question there is decrease so company should have sold treasury stocks but question says that there is no sell of treasury stocks how it can be possible?

2) In the normal circumstances, if treasury stocks are increased negative cash flow will happen due to buy and if treasury stocks are decreased positive cash flow will happen due to sell. Is it right?

December 31, 2017 and 2016 Common Stock Retained Earnings Treasury Stock Total Equity 2016 $33,000 121,000 (13.000) $141,000 2015 $2.000 75 000 18.100) $68,900 Increase/Decrease) $31.000 46.000 (4.900) $72,100 There were no stock retirements during the year. There were no sales of treasury stock during the year mpute the cash flow from transactions involving treasury stock A $4,900 negative cash flow B. $4,900 of positive cash flow C. $13,000 negative cash flow D. zero net cash flow