For adults, which ranges below reflect an accurate bmi category?

a. if your bmi is less than 18.5, it falls within the obese category

b. if your bmi is 18.5-24.9, it falls within the normal or healthy weight category

c. if your bmi is 30 or higher, it falls within the overweight category

d. if your bmi is 25-29.9, it falls within the underweight category