What is the formula for calculating BMI in children?

I - BMI = WEIGHT / (HEIGHT in meters) ^ 2
II - BMI = WEIGHT * (HEIGHT in meters) ^ 2
III - BMI = WEIGHT / (HEIGHT in centimeters) ^ 2
IV - BMI = WEIGHT * (HEIGHT in centimeters) ^ 2
a) Only I is correct.
b) Only II is correct.
c) Only III is correct.
d) Only IV is correct.
e) Both I and III are correct.