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
Which of the following is not a body building food? 
Select and explain. 
A. Milk, B. Egg, C. Groundnut, D. Fruits
D: Fruits
Answer: D: Fruits 
Explanation: Classification of food by predominant functions: Body building foods; milk, egg, poultry, pulses, meat, groundnut etc. Energy giving foods: fats, oils, cereals, sugar, tubers, roots Protective foods: vegetable, fruit, milk Ref: Park 22nd edition, Page 564.