DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Today, instead, DDT is largely useless against many insects. Which of these would have been required for this pest eradication effort to be successful in the long run?

A) All habitats should have received applications of DDT at about the same time.
B) The frequency of DDT application should have been higher
C) None of the insect pests would have genetic variations that resulted in DDT resistance.
D) DDT application should have been continual.