Which of the following is evidence for the endosymbiosis theory

I got my information from quizlet. Here is what I found A. Mitochondria and plastids contain their own unique sets of genes.

B. Observation of endosymbiotic events in the eukaryote Hatena.

C. Transfer of genes from endosymbionts to the host's nucleus.

D. Similarity of ribosomes found in mitochondria and plastids to those of bacteria.

E. All of the above

The answer is E all of the above is evidence of the theory.