Which of the Following Characterizes Integrated Pest Management Compared to the Use

Which of the following characterizes integrated pest management compared to the use of pesticides alone? 

A)  Integrated pest management is more expensive than using pesticides. 
B)  Integrated pest management achieves results sooner than by using pesticides. 
C)  Integrated pest management requires more expert knowledge about individual pest-crop situations than using pesticides. 
D)  Integrated pest management is less expensive than using pesticides.