This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Respiratory system, Subject name: Physiology
[{'content': 'Which of the following is inactive during normal respiration? \nSelect and explain. \nA. Pre-Botzinger complex, B. Dorsal motor neurons, C. Ventral VRG group of neurons, D. Pneumotaxic centre', 'role': 'user'}, {'content': 'Answer: C \nExplanation: Ventral group of respiratory neurones are inactive during normal respiration Ref: guyton and hall textbook of medical physiology 12 edition page number: 370,371,372', 'role': 'assistant'}]