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19. Caterpillar plans to upgrade their generator manufacturing system and is evaluatin two alternatives. System A has a fixed cost for the first year of $8,100,000 and a variab cost of $19,000. The capacity of System A is 12,000 units per year. System B has a fix cost of $6,200,000, but the cost to produce each unit is $23,000. The capacity of System is 8,000 per year. (a) What is the crossover point (point of indifference) for the two machines? (b) What is the range of units for which System A is preferable? (c) What is the range of units for which System B is proferable