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
Normal serum alkaline phosphatase level is 
Select and explain. 
A. 100-400 Bodansky units, B. 1000-4000 Bodansky units, C. 0.1-0.4 Bodansky units, D. 1-4 Bodansky units
D: 1-4 Bodansky units
Answer: D: 1-4 Bodansky units 
Explanation: None