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: Forensic Medicine
[{'content': 'How many cusps are present in chewing surface of premolars ? \nSelect and explain. \nA. 2, B. 3, C. 4, D. 5', 'role': 'user'}, {'content': "Answer: A \nExplanation: Ans. is 'a' i.e., 2 Premolars or bicuspids They have two cusps on the chewing surface of teeth. The root is usually single but may be double.", 'role': 'assistant'}]