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
Inner ear is present in which bone - 
Select and explain. 
A. Parietal bone, B. Petrous part of temporal bone, C. Occipital bone, D. Petrous part of squamous bone
B: Petrous part of temporal bone
Answer: B: Petrous part of temporal bone 
Explanation: Inner ear lies within the petrous part of temporal bone.
Ref. Turner 10/e, p 228; BDC 4/e, Vol. III p 264