How has science done a disservice (伤害) to mankind? （ ）. 

How has science done a disservice (伤害) to mankind? （ ）. 

A.

Because of science, disease caused by contaminated food has been virtually done away with

B.

It has caused a lack of information, concerning the value of food

C.

As a result of scientific intervention, some potentially harmful substances have been added to our food

D.

The scientists have preserved the color of meats, but not of vegetables

正确答案是C