Definition: In this task, you are given a multiple-choice question about healthcare. Answer the question based on your information and classify your answers into '1', '2', '3', and '4'.
Input: Question: Alcohol is included in the group of sedative or depressant drugs because it acts as: 
 Options:  <1> Cholinergic receptor agonist: nicotinic and muscarinic. <2> Antagonist of serotonergic (5 HT) and cholinergic receptors. <3> Noradrenergic receptor agonist and serotonin antagonist. <4> Antagonist of NMDA receptors and agonist of AMPA receptors. <5> GABA-a receptor agonist and NMDA receptor antagonist.
