Which Statement About the Evolution of the Mitochondrion Is Correct

Multiple Choice

Which statement about the evolution of the mitochondrion is correct?

A) It originated as a prokaryote that detoxified oxygen.
B) It originated as a prokaryote that could photosynthesize.
C) It was acquired through endosymbiosis of a cyanobacterium by a eukaryote.
D) Its origins can be traced back to an archaean ancestor.
E) It is the result of a secondary endosymbiotic event.