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: Surgery
[{'content': "Atkin's diet is \nSelect and explain. \nA. Protein restricted low calorie diet, B. Carbohydrate restricted low calorie diet, C. Fat restricted low calorie diet, D. Mineral restricted low calorie diet.", 'role': 'user'}, {'content': "Answer: B \nExplanation: Carbohydrate restricted low calorie diet Traditionally, fat restricted, low calorie diet has been used for weight loss. Atkin's proposed a new theorey for weight loss based on carbohydrate restricted low calorie diet", 'role': 'assistant'}]