This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Biostatistics, Subject name: Social & Preventive Medicine
[{'content': 'True about simple randomization is- \nSelect and explain. \nA. Every person has an equal chance of selection, B. Less number of samples are obtained, C. Also known as systemic randomization, D. Groups are not distributed', 'role': 'user'}, {'content': "Answer: A \nExplanation: Park's textbook of preventive and social medicine 23rd edition *With this procedure,the sample is drawn in such a way that each unit has an equal chance of being drawn in the sample.", 'role': 'assistant'}]