This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Pancreas, Subject name: Pharmacology
What percentage of Lente Insulin is amorphous? 
Select and explain. 
A. 70%, B. 30%, C. 50%, D. 90%
B: 30%
Answer: B: 30% 
Explanation: Insulin Lente is 70% crystalline (ultra lente) and 30% amorphous (semi lente). It is an insulin - zinc suspension