Thornton company income statements for the year 2018 segment a b c sales $ 164,000 $ 253,000 $ 264,000 cost of goods sold (127,000 ) (88,000 ) (78,000 ) sales commissions (19,000 ) (26,000 ) (23,000 ) contribution margin 18,000 139,000 163,000 general fixed operating expenses (allocation of president’s salary) (42,000 ) (37,000 ) (29,000 ) advertising expense (specific to individual divisions) (6,000 ) (17,000 ) 0 net income $ (30,000 ) $ 85,000 $ 134,000 required prepare a schedule of relevant sales and costs for segment a. prepare comparative income statements for the company as a whole under two alternatives: (1) the retention of segment a and (2) the elimination of segment a.