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
Which of the following injection is available for subcutaneous administration? 
Select and explain. 
A. Albuterol, B. Terbutaline, C. Metaproteronol, D. Pirbuterol
B: Terbutaline
Answer: B: Terbutaline 
Explanation: Ans. b. Terbutaline (Ref KDT 7/e p133, 223, 6/e p127, 323; Katzung 11/e p344, 227)Terbutaline can be given by subcutaneous route.Terbutaline is adrenergic agonist. Its sabcutaneous injection is used in patients with severe exacerbations of asthma.