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': 'Pulmonary hypertension may occur in all of the following conditions except - \nSelect and explain. \nA. Toxic oil syndrome, B. Progressive systemic sclerosis, C. Sickle cell anemia, D. Argemone mexicana poisoning', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]