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': 'The precipitate formed due to reaction of chlorhexidine and sodium hypochlorite, has all of the following except \nSelect and explain. \nA. Insoluble, B. Yellowish orange in coulour, C. Result of polymerization reaction, D. causes cyanosis due to methemoglobin formation', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]