(1) Option A: A natural person can only invest to set up a one-man company, and a one-man company "cannot" invest to set up a new one-man company; (2) Option B: A one-person company has independent legal personality, and shareholders usually only bear limited liability for the company's debts. Only when shareholders can't prove that the company's property is independent of their own property, can shareholders bear joint liability for the company's debts; (3) Option C: The provision that shareholders of a one-person company should pay their capital contribution in full at one time was cancelled due to the revision of the company law.