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: ENT
[{'content': 'Inner ear is present in which bone - \nSelect and explain. \nA. Parietal bone, B. Petrous part of temporal bone, C. Occipital bone, D. Petrous part of squamous bone', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Inner ear lies within the petrous part of temporal bone.\nRef. Turner 10/e, p 228; BDC 4/e, Vol. III p 264', 'role': 'assistant'}]