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': 'What will be the line of treatment, if coronal pulp dies? \nSelect and explain. \nA. Extraction, B. Surgical removal of apical fragment, C. RCT of coronal fragment and treat the apical fragment with apexification, D. All of the above', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]