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: Which of these statements is NOT a characteristic of phase I clinical trials?
Options: <1> They usually have non-therapeutic goals. <2> They can be done in healthy volunteers. <3> They can be done in patients. <4> They are usually randomized. <5> They are usually open.
Example Output: 4

Example Input: Question: One of the following is NOT a guideline that should guide interventions in Autism Spectrum Disorders. Point out which:
Options: <1> Use personalized teaching programs based on an evolutionary framework. <2> Intervene in a group setting to favor the acquisition of social skills. <3> Intervene in highly structured and predictable contexts. <4> Use learning procedures without mistakes. <5> Favor motivation.
Example Output: 2

Example Input: Question: Which of the following functions is not typical of the stomach?
Options: <1> Food storage. <2> Protein digestion. <3> Secretion of intrinsic factor. <4> Secretion of hormones <5> Amylase secretion.
Example Output:
5