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: Ophthalmological ointments:
Options: <1> They may contain solid particles but only with a controlled size. <2> They do not need to be sterile. <3> They require the test of pyrogens. <4> They can not be W / O emulsions. <5> Always your excipients must be fatty

Output: 1

Input: Consider Input: Question: What does the intersessional sampling used in observation techniques refer to:
Options: <1> To the registration of relevant information between sessions. <2> To the periodicity, number and criteria of start-end of the sessions. <3> To the successive rounds of observation of the subjects to observe. <4> To the temporary selection and its interval or partial modality. <5> To the record of focal events that occur between sessions.

Output: 2

Input: Consider Input: Question: The association of advanced age, diabetes, otalgia that does not progress favorably despite the treatment and paralysis of the VII cranial nerve lead to think of one of the following clinical pictures as the first option:
Options: <1> Nasopharyngeal carcinoma <2> Granular myringitis. <3> Diffuse labyrinthitis. <4> Carcinoma of the temporal bone. <5> Malignant external otitis
Output: 5