This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Endocrinology, Subject name: Pharmacology
Best preparation of insulin for IV injection is:(1995) 
Select and explain. 
A. Lente, B. Semi lente, C. Regular insulin, D. Humulin
C: Regular insulin
Answer: C: Regular insulin 
Explanation: cRef: KDT, 5th ed, p. 243, 240 & 4th ed, p. 271-269