If a government policy change harms a​ monopolist, the government could A. tax those who get additional gains and compensate the​ monopolist, thereby making the change a Pareto improvement. B. increase the general tax rate and compensate the​ monopolist, thereby making the change a Pareto improvement. C. do​ nothing, because the change is a Pareto improvement. D. It is not possible to mitigate the harm to a monopolist.