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: Medicine
The insulin indicated in diabetic ketoacidosis is: 
Select and explain. 
A. Lento insulin s.c., B. Solubile insulin s.c., C. Protamin zinc insulin i.m., D. Soluble insulin I.V. infusion
D: Soluble insulin I.V. infusion
Answer: D: Soluble insulin I.V. infusion 
Explanation: None