This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2019, Subject name: Pharmacology
[{'content': 'Insulin of choice for the treatment of diabetes ketoacidosis is: \nSelect and explain. \nA. Regular Insulin, B. NPH insulin, C. Insulin glargine, D. Insulin lispro', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Diabetic ketoacidosis is emergency, need to give insulin by I/V route Insulin available in I/V route is regular insulin Regular insulin is DOC for diabetic ketoacidosis', 'role': 'assistant'}]