Train service suffers when a railroad combines commuter and freight service. By dividing its attention between its freight and commuter customers, a railroad serves neither particularly well. Therefore, if a railroad is going to be a successful business, then it must concentrate exclusively on one of these two markets. For the argument to be logically correct, it must make which one of the following assumptions? OPTIONS [A]. Commuter and freight service have little in common with each other. [B]. The first priority of a railroad is to be a successful business. [C]. Unless a railroad serves its customers well, it will not be a successful business. [D]. If a railroad concentrates on commuter service, it will be a successful business. [E]. Railroad commuters rarely want freight service as well. Why the answer is C) and not A)

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