This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: New born infants, Subject name: Pediatrics
Which major nutrient is richly present in mothers hind milk ? 
Select and explain. 
A. Fat, B. Protein, C. Carbohydrate, D. Water
A: Fat
Answer: A: Fat 
Explanation: Breast milk is rich in polyunsaturated fatty acids, necessary for myelination of nervous system. It also contains omega 2 and Omega 6 fatty acids which are necessary for formation of prostaglandin and cholesterol, required as base for steroid hormones. Reference: GHAI Essential pediatrics, 8th edition