This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Malnutrition, Subject name: Pediatrics
Which of the following are the qualities of a green light food as per traffic light diet plan for children? 
Select and explain. 
A. Nutrition dense, but higher In calories and fat, B. Low calories, high fibre, low fat. Nutrition-dense, C. High in calories. sugar and fat, D. None of the above
B: Low calories, high fibre, low fat. Nutrition-dense
Answer: B: Low calories, high fibre, low fat. Nutrition-dense 
Explanation: The "traffic light" diet groups food as: Category Characteristics Recommended Intake Examples Red High in calories, sugar, and fat Reserved for infrequent treats Fatty meats, sugar, sweet beverages, fried foods Yellow Nutrient-dense, but higher in calories & fat In moderation Lean meats, dairy, starches, grains Green Low-calorie, high-fiber, low-fat, nutrient-dense Without any limitations Fruits, vegetables