This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Biochemistry
[{'content': 'In which organelle (s) of hepatocyte, the elongation of long chain fatty acid takes placea) Endoplasmic reticulum (ER)b)  Golgi bodyc) Mitochondriad) Lysosomese) Ribosome \nSelect and explain. \nA. ac, B. bc, C. ad, D. b', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Endoplasmic reticulum (E ) & i.e., Mitochondria\n\nElongation takes place in microsomal system (endoplasmic reticulum) and mitochondrial system.', 'role': 'assistant'}]