How Did Mitochondria and Chloroplasts Arise in Eukaryotic Cells

Multiple Choice

How did mitochondria and chloroplasts arise in eukaryotic cells?

A) Via endosymbiosis, where mitochondria and chloroplasts were independent prokaryotic organisms that were engulfed by a larger cell
B) Via binary fission, where bacteria divided to create mitochondria and chloroplasts
C) Via the endomembrane system that engulfed mitochondria and chloroplasts
D) Via the endomembrane system that enfolded in such a way as to create mitochondria and chloroplasts