This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Centrally acting sympatholytic agent used as anti hypeensive agent is: 
Select and explain. 
A. Propanolol, B. Moxonidine, C. Prazosin, D. Phenoxybenzamine
B: Moxonidine
Answer: B: Moxonidine 
Explanation: Clonidine, moxonidine,relminidine are centrally acting antihypeensives They cross the blood-brain barrier and stimulates alpha2A receptors in vasomotor Centre and decreases sympathetic outflow from VMC. This lead to a decrease in blood pressure. (REF: ESSENTIALs OF MEDICAL PHARMACOLOGY-K.D TRIPATHI 8th Edition)