9. Which of the following characteristics supports molecular evidence for combining the dinoflagellates, apicomplexans, and ciliates in the monophyletic clade Alveolata?(A) All are pathogenic.(B)Their flagella or cilia are organized with the 9 + 2 microtubular ultrastructure.(C) All are found exclusively in freshwater or marine habitats.(D) All possess mitochondria.(E) The three groups have small membrane-bound alveoli under their cell surfaces.