This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Preventive Medicine in Obstetrics, Paediatrics & Geriatrics, Subject name: Social & Preventive Medicine
[{'content': 'Maximum demographic gap seen in \nSelect and explain. \nA. Late stage 2, B. Early stage 2, C. Stage 4, D. Late stage 3', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Max demographic gap is in "late stage 2" Min demographic gap is in "Stage 1" & "Stage 4" Contraction of staing demographic gap is in "early pa of stage-3" Negative demographic gap is seen in "stage-5"', 'role': 'assistant'}]