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
All of the following are peripherally acting muscle relaxants except 
Select and explain. 
A. Dantrolene, B. Pancuronium, C. Succinyl choline, D. Baclofen
D: Baclofen
Answer: D: Baclofen 
Explanation: Baclofen is a GABA - B agonist that acts centrally to produce muscle relaxation.