A famous saying that expresses the ideas of Machiavelli is: A. The ends justify the means.
Machiavelli was an italian historian, politician, diplomat and humanist who wrote the book The Prince. On his famous saying "The end justify the means" he puts significance on the morality on the end outcome rather than the actions taken to achieve the said result.
To many people, this statement was an excuse to perform illegal and bad actions arguing that it was done in favor of a better good.