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: Social & Preventive Medicine
[{'content': 'About Randomized Controlled trial all are true except: \nSelect and explain. \nA. Baseline characteristics are comparable, B. Bias can be eliminated by double blinding, C. Sample size depends on the type of study, D. Dropouts are excluded from the study', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Dropouts are excluded from the study I Ref Epidemiology and health services By Haroutune K. Armenian, Sam Shapiro p63; http://www3.interscience.wiley.coniljourna1/89011300/abstract?CRETRY= I &SRETRY=0 Park 20/ep1 Repeat from May 11', 'role': 'assistant'}]