From an economic perspective, an individual从经济学视角来看，个人 A. B. C. D. A、 Cannot be a firm since an individual cannot accumulate the capital necessary to be a firm.不能成立公司，因为个人无法积累成立公司必要的资本 B、 Cannot be a firm since the management function must be distinct from the worker function.不能成立公司，因为管理职能和员工职能必须分开履行 C、 Can be a firm since the law permits it.可以成立公司，因为法律允许 D、 Can be a firm since the individual can fulfill the functions of entrepreneur, manager, and worker.可以成立公司，因为个人可以同时履行创业者、管理者和员工的职能

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