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': 'Bleeding on probing will tell us the: \nSelect and explain. \nA. Gingival health of a child, B. Status of gingival health on the day of examination, C. 7 days after prophylaxis, D. 14 days after prophylaxis', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]