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': 'A sinus associated with a periapical pathology requires: \nSelect and explain. \nA. Broad spectrum antibiotics, B. RCT with excision of sinus, C. RCT with Periapical curettage, D. RCT with no treatment for sinus', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]