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': 'If we reject null hypothesis, when actually it si true it is known as- \nSelect and explain. \nA. Type I error, B. Type II error, C. Power, D. Specificity', 'role': 'user'}, {'content': 'Answer: A \nExplanation: <p> Type 1 error. Reference:Simple Biostatistics by Indeayan & Indrayan,1st edition,pg no:155-57. <\\p>', 'role': 'assistant'}]