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': 'Color change in a process indicator strip indicates \nSelect and explain. \nA. verification of sterilization., B. verification of completed sterilization cycle., C. a change in pH., D. a need to reprocess.', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]