PLEASE HELPPP Chlorinated hydrocarbon pesticides, such as DDT, were introduced during World War II to control insects
in agricultural crops. All of the following statements about chlorinated hydrocarbons are true EXCEPT:
A. They are safe for all organisms except insect pests.
B. They are inexpensive and easy to apply.
C. They persist for a long time in the environment.
D. They boost crop yields by killing pests.