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 Dewel's method of serial extraction procedure, the second step involved is to \nSelect and explain. \nA. Extract deciduous canine only, B. Extract first premolar, C. Extract first deciduous molar only, D. Extract both deciduous canine and first deciduous molar", 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]