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: Biochemistry
Kwashiorkar , true is 
Select and explain. 
A. Deficiency of protein with sufficient calorie intake, B. Occurs in children between 6 months and 3 years of age, C. Subcutaneous fat preserved but atrophy of different tissues, D. All of the above
D: All of the above
Answer: D: All of the above 
Explanation: None