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': 'Space lattice refers to: \nSelect and explain. \nA. Inter atomic movement, B. Inter atomic imbalance, C. Arrangement of atoms, D. Arrangement of molecules', 'role': 'user'}, {'content': 'Answer: C \nExplanation: None', 'role': 'assistant'}]