Read the following statements

A. Systemic insecticides kill insects only after moving through the system of the plant hosting the target insect.

B. Contact pesticides enter the target pest upon direct application.

C. Contact pesticides/insecticides or its residue kill target plants or insects on direct application.

D. If a particular insect does not feed on the plant, it cannot be harmed by systemic insecticides.

E. Contact pesticides are generally used only for specific insects occuring on specific plants / crops.

Choose the correct answer from the options given below: