<prompt> Combined phase I II trial done for -Antihypeensive agentAnticancer drugsImmunosuppresantAntiarrhythmic agents  <response>: 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. 