A) Does support the endosymbiotic theory because mitochondria and chloroplasts have their own DNA.
B) Also supports the theory, the shape and size is similar
C) Support its too, because they have a double membrane as if they would have been phagocytosed.
D) Mitochondria and chloroplasts do contain ribosomes.
E) DOES NOT support the endosymbiotic theory, because neither mitochondria nor chloroplasts have flagella.