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
Which of following is not rapid acting insulin? 
Select and explain. 
A. LISPRO, B. ASPA, C. GLARGINE, D. GLULISINE
C: GLARGINE
Answer: C: GLARGINE 
Explanation: Insulin: Indication: - DM type 1- Uncontrolled DM 2- Gestational DM- DK- Hyperkalemia Preparations: All insulin preparation are given by - Sub cutaneous route Regular insulin also be given by - IV route All insulin preparation are at - Neutral pH Glargine is at acidic pH (<4)(No insulin should be mixed with it) S/E of insulin: Hypoglycemia