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: Physiology
[{'content': 'Functional residual volume is? \nSelect and explain. \nA. After normal inspiration, B. After normal expiration, C. After forceful expiration, D. After forceful inspiration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Ans:A. After normal inspirationFunctional Residual Capacity (FRC) is the volume of air present in the lungs at the end of passive expiration.', 'role': 'assistant'}]