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': 'Combined phase I & II trial done for - \nSelect and explain. \nA. Antihypeensive agent, B. Anticancer drugs, C. Immunosuppresant, D. Antiarrhythmic agents', 'role': 'user'}, {'content': "Answer: B \nExplanation: Ans. is 'b' i.e., Anticancer drugs o Because anticancer drugs can produce unacceptable toxicity and we cannot expose healthy humans to such toxicity. Thus, Phase I clinical trials for anticancer drugs are done in patients. Thus, combined phase I and II trials can be done simultaneously as both are done in patients for anticancer drugs.", 'role': 'assistant'}]