The correct option is A Cotton bollworms, corn borer
The soil bacterium Bacillus thuringiensis produces crystal proteins called cry proteins, that are toxic to larvae of insects like Tobacco budworm, armyworm, beetles and mosquitoes. cry I Ab controls corn borer. Cry I Ab and cry II Ab control cotton bollworms. Cry III Ab controls colarado potato beetle. Cry III Bb controls corn rootworm.