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
About RCT all are true except 
Select and explain. 
A. Baseline characteristics are comparable, B. Dropouts are excluded from the study, C. Sample size depends on type of study, D. Bias eliminated by double blinding
B: Dropouts are excluded from the study
Answer: B: Dropouts are excluded from the study 
Explanation: None