Which pesticide is suitable for controlling the white grub?

Answer: Option B

Chlorpyriphos pesticide is suitable for controlling the white grub.
The most effective insecticides are chlorpyriphos or phorate and are recommended for soil application against neonate tiny grubs.
The older grubs are hard to control as they move deep into the soil, and the insecticides usually do not penetrate the soil well enough to kill the grubs.