39. Exosomes are extracellular vesicles involved in intercellular communication. Which of the following best describes the structure and biochemical functions of the exosomes? (A) Exosomes are membrane-bound organelles within the cytoplasm that synthesize proteins and lipids for cellular export. (B) Exosomes are large, multilayered vesicles formed by the fusion of multiple cells, facilitating the direct exchange of cytoplasmic contents. (C) Exosomes are small membrane-bound vesicles that originate from the endosomal pathway and carry various biomolecules for intercellular signaling. (D) Exosomes are fragments of the cell membrane that are shed during apoptosis and contain primarily degraded cellular components. (E) Exosomes are specialized structures composed of nucleic acids and proteins that directly transfer genetic material between cells via membrane fusion.