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': 'Mandibular nerve exits the cranial cavity by passing through \nSelect and explain. \nA. Formanen rotundum, B. Foramen lacerum, C. Stylomastoid foramen, D. Foramen ovale', 'role': 'user'}, {'content': "Answer: D \nExplanation: Mandibular nerve begins in the middle cranial fossa through a large sensory root and a small motor root. The sensory root arises from the lateral pa of the trigeminal ganglion and leaves the cranial cavity through the foramen ovale. Ref: BD Chaurasia's HUMAN ANATOMY, Volume 3, 4th edition.", 'role': 'assistant'}]