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 is not a centrally acting hypertensive agent 
Select and explain. 
A. Methyldopa, B. Moxonidine, C. Minoxidil, D. Clonidine
C: Minoxidil
Answer: C: Minoxidil 
Explanation: Minoxidil is a K+ opener used to treat hypertension (peripheral antihypertensives).
Methyldopa, moxinidine and clonidine are α2 agonists (central antihypertensives).