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': 'In formocresol, formaldehyde and cresol are in the ratio of: \nSelect and explain. \nA. 1:02, B. 2:01, C. 1:01, D. 1:03', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Formocresol\n19%\xa0\xa0\xa0\xa0\xa0 Formoceresol\n35%\xa0\xa0\xa0\xa0\xa0 ceresol\n15%\xa0\xa0\xa0\xa0\xa0 Glycerine\nRest – water', 'role': 'assistant'}]