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: Anatomy
[{'content': 'Which of the following area lies immediately lateral to the anterior perforating substance? \nSelect and explain. \nA. Uncus, B. Orbital gyrus, C. Optic Chiasma, D. Limen Insulae', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Anterior perforating substance is an irregularly quadrilateral area in front of the optic tract and behind the olfactory trigone, from which it is separated by the fissure prima; medially and in front, it is continuous with the subcallosal gyrus; it is bounded laterally by Limen insulae of the olfactory tract and is continued into the uncus.', 'role': 'assistant'}]