
Passage: Silent Spring, written by Rachel Carson, an American popular science writer, is regarded as the first work of modern environmental protection movement in the West. Taking DDT as the main case, this book draws the conclusion that chemicals are seriously harmful to human health and the earth's environment. The publication of this book has triggered a national debate in western countries.
Question: If the following statements are true, which of the following statements does not undermine Rachel Carson's conclusion?
A. A.DDT not only kills mosquitoes that transmit malaria, but also does less harm to the environment
B. B.Malaria has made a comeback after DDT was stopped in some parts of Africa
C. C.The use of alternatives to DDT in developed countries is also harmful to the environment
D. D.Tianjin Chemical Plant produced 1000 tons of DDT last year, most of which were exported to Africa to help local residents fight malaria
Answer: