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: Consider Input: Question: Reactions in which there are no intermediates are described as: 
 Options:  <1> Concerted. <2> Polar <3> Radicals <4> Homolitic <5> Heterolithic

Output: 1


Input: Consider Input: Question: With regard to pyrogens and biotechnological medicines, it is possible to say: 
 Options:  <1> They have no tendency to aggregate or form large units with high molecular weight. <2> Ion exchange chromatography procedures (using their positive charge) can reduce endotoxin levels. <3> Ion exchange chromatography procedures (using their negative charge) can reduce endotoxin levels. <4> Ion exchange chromatography procedures (regardless of their charge) can reduce endotoxin levels. <5> They are unstable under standard autoclaving conditions.

Output: 3


Input: Consider Input: Question: All of the following are common complications of untreated generalized anxiety disorder EXCEPT: 
 Options:  <1> Consumption of alcohol and drug abuse. <2> Psychosomatic disorders. <3> Depressive disorders. <4> Psychotic disorders <5> Suicidal behavior


Output: 4