Does Economic Efficiency Indicate That All Pollution Should Be Eliminated

Does economic efficiency indicate that all pollution should be eliminated?

A) Yes, pollution is bad; it harms both people and the environment, and therefore, it should be eliminated.
B) No, at some point, the benefits of still lower levels of pollution will not be worth the additional cost.
C) No, pollution does not harm most people, and therefore, we should not worry about it.
D) Partially, pollution caused by business firms should be eliminated, but people should still be allowed to pollute if they want.