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
Combined phase I & II trial done for - 
Select and explain. 
A. Antihypeensive agent, B. Anticancer drugs, C. Immunosuppresant, D. Antiarrhythmic agents
B: Anticancer drugs
Answer: B: Anticancer drugs 
Explanation: 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.