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
Basic rhythm of respiration is maintained by ? 
Select and explain. 
A. Pneumotaxic centre, B. Pre botzinger complex, C. Dorsal group of neurons, D. Ventral pons group of neurons
B: Pre botzinger complex
Answer: B: Pre botzinger complex 
Explanation: Ans. is 'b' i.e., Pre-Botzinger complex