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
Bovine milk contains 
Select and explain. 
A. 4% of lactose, B. 3% of lactose, C. 5% of lactose, D. 2% of lactose
A: 4% of lactose
Answer: A: 4% of lactose 
Explanation: None