Consider the following statements.
I. Bt toxin gene has been cloned from the bacteria.
II. Genetic engineering works only on animals and has not yet been successfully used on plants.
III. Strains of Bacillus thuringiensis are used in producing bioinsecticidal plants.
Which of the statements given above are correct ?
A. I and II
B. I and III
C. II and III
D. I, II and III