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': 'In molars ideal site for EPT electrode placement is: \nSelect and explain. \nA. Mesiobuccal cusp tip., B. Occlusion third of crown., C. Middle third of crown., D. Cervical third of crown.', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]