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: Pathology
Vasoconstrictor anong these ? 
Select and explain. 
A. NO, B. PGI2, C. Angiotensin-II, D. ANP
C: Angiotensin-II
Answer: C: Angiotensin-II 
Explanation: Ans. is 'c' i.e., Angiotensin-IIImpoant chemical regulator of CVS are :Vasoconstrictors : Noradrenaline, Adrenaline, ADH (vasopressin), angiotension II, Endothelins, PGF2, thromboxane A2.Vasodilators : Kinins (Bradykinin, lysyl-bradykinin), PGE,, PGL (prostacyclin), VIP, ANP, Nitric oxide (NO)