Which of the Follow Describes the Typical Onset of Kwashiorkor

Which of the follow describes the typical onset of kwashiorkor?

A) It occurs gradually over the early years of life as the effects of protein inadequacy accumulate.
B) It is usually synchronized with the drought season.
C) It typically appears in 3-5 years old children due to poor nutritional standards in preschools.
D) It suddenly appears in 1-3 years old children who are weaned from breast milk after the birth of a sibling.