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'.

Example Input: Question: In disorders related to substance use, what is physical dependence? 
 Options:  <1> In a physical process of short duration. <2> In an intense sense of dissatisfaction for not being able to consume the substances. <3> In the action of consuming drugs producing a state of intoxication with psychoactive effect. <4> In a series of physical and psychic changes that take place after the administration of a substance. <5> In a state of physical adaptation manifested by intense physical disturbances when the administration of the drug is interrupted.
Example Output: 5

Example Input: Question: It is a genus of strict anaerobic bacteria that produce endospores and that contain pathogenic species: 
 Options:  <1> Bacteroides. <2> Bacillus. <3> Clostridium <4> Corynebacterium <5> Mycobacterium
Example Output: 3

Example Input: Question: Cyclopentadiene is so reactive that leaving it at room temperature slowly dimerizes by a reaction of: 
 Options:  <1> Friedel-Crafts. <2> Diels-Alder. <3> Markovnikov. <4> Suzuki <5> Gabriel.
Example Output:
2