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': 'Final product in alginate is? \nSelect and explain. \nA. Sodium alginate, B. Potassium alginate, C. Trisodium phosphate, D. Calcium alginate', 'role': 'user'}, {'content': 'Answer: D \nExplanation: None', 'role': 'assistant'}]