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Carla Vista Company has four operating divisions. During the first quarter of 2022 , the company reported aggregate income from operations of $204,400 and the following divisional results, Analysis reveals the following percentages of variable costs in each division. Discontinuance of any division would save 50% of the fixed costs and expenses for that division. Top management is very concerned about the unprofitable divisions (I and II). Consensus is that one or both of the divisions should be discontinued. (a) Compute the contribution margin for Divisions I and II. (Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).) Prepare an incremental analysis concerning the possible discontinuance of Division I. (Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).) Prepare an incremental analysis concerning the possible discontinuance of Division II. (Enter negative amounts using either a negative sign preceding the number e.g. -45 or parentheses e.g. (45).)