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: Physiology
BMI of underweight individual: March 2008 
Select and explain. 
A. Less than 18.5, B. 18.5-24.9, C. 25-29.9, D. More than 30
A: Less than 18.5
Answer: A: Less than 18.5 
Explanation: Ans. A: Less than 18.5BMI=Weight/ HeightLess than 18.5- underweight18.5-24.9- Normal25-29.9- OverweightMore than 30- Obese