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: Social & Preventive Medicine
[{'content': 'Which of the following food is having the highest protein content when compared to others? \nSelect and explain. \nA. Mutton, B. Soya bean, C. Egg, D. Milk', 'role': 'user'}, {'content': "Answer: B \nExplanation: Protein value of some common foods (g/100 g): Mutton 21.4 Fish 19.5 Egg (hen) 13.3 Liver goat 20 Cow's milk 3.2 Soya bean 43.2 Bengal gram 17.1 Ref: Textbook of Preventive and Social Medicine by K Park, 19th edition, Page 498.", 'role': 'assistant'}]