This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: DNB 2018, Subject name: Physiology
[{'content': 'What is FRC? \nSelect and explain. \nA. Volume present in lungs after normal expiration, B. Volume present in lungs after forceful expiration, C. Volume present in lungs after deep inspiration, D. Volume present in lungs after normal inspiration', 'role': 'user'}, {'content': 'Answer: A \nExplanation: FUNCTIONAL RESIDUAL CAPACITY = ERV + RV The volume of air that remains in lungs at the end of normal expiration = 2300 ml', 'role': 'assistant'}]