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': 'The main pathway for "De - Novo" synthesis of fatty acids occurs in \nSelect and explain. \nA. Mitochondria, B. Nucleus, C. Cytosol, D. None of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]