This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Pharmacology
[{'content': 'Which neurotransmitter is responsible for Barbiturates action? \nSelect and explain. \nA. Glutamate, B. Glycine, C. Aspartate, D. GABA', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ans. D. GABABarbiturates act on GABA receptor and facilitate the function of GABA by increasing the duration of opening of Chloride channels and thus showing an inhibitory effect. On the other hand, BZD increases the frequency of opening of Cl- channel.', 'role': 'assistant'}]