A

Cow’s milk protein is roughly 80 % casein and only about 20 % whey, not the other way around, making option A incorrect [Pepe, 2013, PMID 23533710]. In contrast, cow’s milk does have less lactose (≈4.5 g/100 mL) than human milk (≈7 g/100 mL) [Jenness, 1979, PMID 392766], and it supplies higher sodium and potassium loads than typical infant formulas, as shown by higher intakes in infants given cow’s milk versus formula [Montalto, 1985, PMID 3969338].