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': 'P-value is the probabilty of- \nSelect and explain. \nA. Not rejecting a null hypothesis when true, B. Rejecting a null hypothesis when true, C. Not rejecting a null hypothesis when false, D. Rejecting a null hypothesis when false', 'role': 'user'}, {'content': 'Answer: B \nExplanation: <p> Rejecting a null hypothesis when true. Reference:Simple Biostatistics by Indrayan & Indeayan ,1st edition,pg no:156. <\\p>', 'role': 'assistant'}]