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 synthesis of fatty acids energy is supplied by: \nSelect and explain. \nA. NAD, B. FAD, C. GTP, D. NADPH', 'role': 'user'}, {'content': 'Answer: D \nExplanation: D i.e. NADPH', 'role': 'assistant'}]