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: Dental
[{'content': 'Bimodality in person distribution refers to____. \nSelect and explain. \nA. Description of two etiological hypothesis of a disease in one person., B. Evaluation of two different environmental factors of a person in  a disease causation., C. Two separate peaks instead of in the age incidence curve of a disease., D. Highest point of curve in age incidence curve of a disease.', 'role': 'user'}, {'content': "Answer: C \nExplanation: Bimodality\n\nSometimes\xa0 there\xa0 may\xa0 be two\xa0 separate\xa0 peaks instead of one in the age incidence curve of a\xa0 disease.\nExample-\xa0 Hodgkin's lymphoma shows bimodal curve with peaks at 15-20 years and 70-80 years.", 'role': 'assistant'}]