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: Pharmacology
True about lispro–insulin is: a) Action is faster and short in duration than regular insulin b) It is given 15 minutes prior to meal c) Source is lamb d) Action is faster and of longer duration than regular insulin 
Select and explain. 
A. b, B. d, C. bc, D. ab
D: ab
Answer: D: ab 
Explanation: None