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 does not cause hyperventilation? \nSelect and explain. \nA. Anxiety, B. High altitude, C. Pulmonary hypeension, D. Psychotic illness', 'role': 'user'}, {'content': "Answer: C \nExplanation: Physiological causes of ventilation are anxiety, altitude, pregnancy, and exercise. Other common pathological causes include hypoxemia, pulmonary conditions like pneumonia, pulmonary embolism, bronchial asthma, cardiac conditions like congestive hea failure and hypotension, acidosis, hepatic failure, psychogenic, salicylates, fever and sepsis. Ref: Pulmonary Function: A Guide for Clinicians By Gabriel Laszlo, 1994, Page 172 ; Harrison's 17th ed chapter 258", 'role': 'assistant'}]