44. Which of the following best supports the endosymbiotic theory of the evolutionary origin of mitochondria? (A) Mitochondria, chloroplasts, and prokaryotes contain electron carriers. (B) Mitochondrial and bacterial ribosomal functions are inhibited by the same antibiotics. (C) Genes for mitochondrial pyruvate dehydrogenase subunits are found in the nuclear DNA. (D) The outer mitochondrial membrane contains the protein porin. (E) Many mitochondrial proteins are imported across both inner and outer membranes after translation on cytoplasmic ribosomes is completed.