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
Which of the following does not cause hyperventilation? 
Select and explain. 
A. Anxiety, B. High altitude, C. Pulmonary hypeension, D. Psychotic illness
C: Pulmonary hypeension
Answer: C: Pulmonary hypeension 
Explanation: 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