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: Social & Preventive Medicine
Protein content in 100 grams of cow milk 
Select and explain. 
A. 4.3, B. 3.2, C. 2.2, D. 1.2
B: 3.2
Answer: B: 3.2 
Explanation: Ans. is 'b' i.e., 3.2