This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Head and neck, Subject name: Anatomy
[{'content': 'The commonest site of fracture in Base of Skull? \nSelect and explain. \nA. Anterior Cranial fossa, B. Middle cranial fossa, C. Posterior cranial fossa, D. Lateral cranial fossa', 'role': 'user'}, {'content': 'Answer: B \nExplanation: The common sites of fracture in the skull are:(a) The parietal area of the vault.(b) The middle cranial fossa of the base. This fossa is weakened by numerous foramina and canals.The facial bones commonly fractured are: (a) The nasal bone and (b) the mandible.Some clinical features of petrous temporal bone fractureBattle signCSF otorrheaotorrhagia', 'role': 'assistant'}]