This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Diuretic, Subject name: Pharmacology
Which drug is vassopressin V2 receptor selective agonist - 
Select and explain. 
A. Lypressin, B. Desmopressin, C. Terlipressin, D. None
B: Desmopressin
Answer: B: Desmopressin 
Explanation: Ans. is 'b' i.e., Desmopressin o Lypressin - Agonist on V1 & V2.o Desmopressin - Selective V2 agonisto Terlipressin - Prodrug of vasopressin.