Please answer!! This is only one question. Thank you!!

Jackson Company and Stanley Company each have sales of $250,000 and costs of $160,000. Jackson Company's costs consist of $50,000 fixed and $110,000 variable, while Stanley Company's costs consist of $110,000 fixed and $50,000 variable. Required: a) Prepare contribution margin income statements for each company. b) Are the net income amounts the same for both companies? c) Which company will suffer the greatest decline in net income if sales decrease by 20%