This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nutrition, Subject name: Pediatrics
What is the calorie content of 100 mL of human breast milk? 
Select and explain. 
A. 67 kcal, B. 90 kcal, C. 100 kcal, D. 45 kcal
A: 67 kcal
Answer: A: 67 kcal 
Explanation: Calorie content of 100 ml of breast milk is 67 kcal. Ref: Table 5.4; Page 97; Ghai essential pediatrics; 6th edition