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: Medicine
[{'content': 'Which of the following sites is not involved in a posterior cerebral artery infarct - \nSelect and explain. \nA. Midbrain, B. Thalamus, C. Temporal lobe, D. Anterior Cortex', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]