what is the answer and why?

what i know is when the a/p increase.. we add but here he didn't

a136. Utley Company had a cost of purchases of $250,000. The comparative statement of financial posititon analysis revealed a $10,000 decrease in inventory and a $20,000 increase in accounts payable. What were Utley's cash payments to suppliers? a. $230,000 b. $220,000 C. $260,000 d. $280,000 Ans: a, SO. 6. Bloom: AP. Difficulty: Hard, Min: 3. AACSB: None, AICPA BB: Legal/Regulatory, AICPA FN: Measurement, AICPA PC: Problem Solving. IMA: FSA