This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pediatrics
Obesity in a child of age 2 years is defined as: 
Select and explain. 
A. Weight for height more than double of expected, B. Weight for age more than double of expected, C. BMI >30, D. BMI >95th percentile
D: BMI >95th percentile
Answer: D: BMI >95th percentile 
Explanation: d. BMI >95th percentile(Ref: Nelson's 20/e p 307-315, Ghai 8/e p 528-529)Obesity in children is defined as BMI >95th percentile; Body mass index (BMI) is equal to weight/height2 (in kg/m2).