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': 'All of the following are true of pyrazinamide EXCEPT. \nSelect and explain. \nA. It kills intracellular organisms, B. It is contraindicated in pregnancy, C. It crosses blood brain barrier, D. Is is must in short course chemotherapy', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]