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': 'In a community, an increase in new cases denotes \nSelect and explain. \nA. Increase in incidence rate, B. Increase in prevalence rate, C. Decrease in incidence rate, D. Decrease in prevalence rate', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Increased incident rates show that there is an increase in new cases of that particular disease.\nIncidence rate is defined as the number of\xa0NEW\xa0cases occurring in a defined population during a specified period of time.', 'role': 'assistant'}]