Task: Text Categorization
Input (English): Question: The sedation and drowsiness that mirtazapine produces are directly related to its interaction with the receptors: 
 Options:  <0> 5-HT1. <1> Adrenergic 1 and 2. <2> Histaminergic H1. <3> GABA <4> Muscarinic cholinergic
Output (English): pharmacology