10. Thomas Hunt Morgan's choice of Drosop phila melanog gaster (fruit fy) has been proven to be useful even today. Which of the following character has continued to make it one of the most useful and powerful model organism ims in research?
(A) They have compound eyes
(B) They have large and transparent embryos that can be easily studied
(C) They have short life cycle with large n number of offspring
(D) They can be used to model almost all human diseases