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: Pharmacology
[{'content': 'Ketamine should be avoided in : \nSelect and explain. \nA. The presence of increased arterial pressure, B. Pregnancy, C. Hypovolemic shock, D. Asthmatic', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]