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: Medicine
Insulin preperation with longest action 
Select and explain. 
A. Aspa, B. Lispro, C. Glargine, D. NPH
C: Glargine
Answer: C: Glargine 
Explanation: Propeies of Insulin PreparationsPreparationTime of Action (Hr)Onset PeakEffective durationSho actingAspa<0.250.5-1.52-4Glusiline<0.250.5-1.52-4Lispro<0.250.5-1.52-4Regular0.5-1.02-33-6Long actingDetemir1-4---12-24Glargine2-4---12-24NPH2-44-1010-16Ref: Harrison 19e pg: 2411