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': 'Soft tissue curettage is indicated in: \nSelect and explain. \nA. Periodontal pockets, B. Edematous gingival pockets, C. Fibrous gingival pockets, D. Supragingival calculus deposits', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]