This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Paediatrics, Subject name: Pediatrics
Which of the following is true about the composition of breast milk? 
Select and explain. 
A. It has more protein than cow's milk, B. It has more carbohydrates than cow's milk, C. It has lesser PUFA than cow's milk, D. It has more vitamin K than cow's milk
B: It has more carbohydrates than cow's milk
Answer: B: It has more carbohydrates than cow's milk 
Explanation: Composition of Breast Milk (c.f Cow Milk (CM)) 1. Carbohydrates - Lactose concentration in BM (7g/dl) > CM (4.5g/dl) 2. Proteins - BM (1 g/dl) < CM (3.5 g/dl) - BM richer in whey protein (lactalbumin) which is more easily digestible than casein in CM. - BM contains adequate amount of cysteine, Taurine, Methionine - Vital for CNS development 3. Lipids - BM is richer in PUFA & DHA (Docosahexaenoic Acid) - helps in CNS development of baby 4. Minerals - Iron in BM - more easily absorbable - Ca:P ratio in BM ours Calcium absorption (CM - more phosphate; leads to less calcium absorption; therefore predominantly CM fed baby - more risk of hypocalcemia & scurvy) 5. Vitamins:- BM contains adequate amount of all vitamins except: - Vit D - (Supplement 400IU/day throughout infancy) - Vit K - (1 mg IM to all babies at bih to prevent hemorrhagic disease of new born) - Vit B12 - (In strictly vegan mothers) 6. Anti - Infective Substances Present in BM Are: Mnemonic: "Tech for PLAB" TGF - b Phagocytic macrophages PABA (Para Amino Benzoic Acid) Lactoferrin Lysozyme Antibodies especially lgA Bifidus factor Bile stimulated lipase