【单选题】Which of the following is closest to the point Postman is trying to make in this essay?
A.
Euphemism, by introducing new ways of labeling old notions into the vocabulary of a language, alters language user's conception of the world.
B.
Euphemism is not a contemptible process because a name is nothing more than a label, and giving pretty names to ugly realities will not alter people's perception of them.
C.
More than the coinage of an alternative for a less agreeable term in a language, euphemism is a useful means in effecting change in language user's beliefs and attitudes when such a change is called for by social trends.