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: Radiology
[{'content': 'Internal resorption may be seen on the radiograph as \nSelect and explain. \nA. Inter proximal bone loss, B. Small radiolucent enlargement of the pulp chamber, C. Radiopacity in pulp chamber, D. Small area around the root apex', 'role': 'user'}, {'content': 'Answer: B \nExplanation: None', 'role': 'assistant'}]