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': 'How much fluoride is present in a tooth paste with 700 ppm fluoride? \nSelect and explain. \nA. 0.7 mg per one gram of toothpaste, B. 7 mg per one gram of tooth paste, C. 7.2 mg per one gram of toothpaste, D. 0.007 mg per one gram of toothpaste', 'role': 'user'}, {'content': 'Answer: A \nExplanation: None', 'role': 'assistant'}]