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: Botulinum toxin: 
 Options:  <1> It occurs in infected and poorly aerated wounds. <2> Blocks protein synthesis. <3> It blocks the secretion of acetylcholine in the myoneural plaque. <4> It interferes with nerve impulse transmission at the level of axons. <5> It causes necrosis of the nerve endings.
