A corn plant has been genetically engineered. It produces pollen that can make its own toxins. These talks and protect the corn plant against pests. What is the likely impact on the environment around the corn plant?
A. Bird and butterfly populations around the area may increase.
B. The carbon dioxide level would increase in the area.
C. The concentration of pesticides in a nearby lake would increase.
D. Newer strains of pesticide-resistant pests may develop.