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 fatty acid synthesis CO2 loss occurs in which step \nSelect and explain. \nA. Hydration, B. Dehydration, C. Condensation reaction, D. Reduction', 'role': 'user'}, {'content': 'Answer: C \nExplanation: C i.e. Condensation reaction', 'role': 'assistant'}]