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: 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
Example Output: 1

Example Input: Question: Which of the following is considered a normal response of the cardiovascular system originated in the baroreceptors as a consequence of hypotension ?: 
 Options:  <1> Increase in systemic vascular resistance. <2> Increase in parasympathetic stimulation. <3> Decrease in heart rate <4> Decreased stroke volume. <5> Decrease in cardiac output
Example Output: 1

Example Input: Question: The solubility of calcium fluoride in a solution of pH <3 is higher than in pure water due to: 
 Options:  <1> The absence of reactions of formation of hydroxylated calcium complexes at these pH values. <2> The lower hydration capacity of the precipitate particles at these pH values. <3> The absence of reactions of formation of soluble complexes of calcium and fluoride at these pH values. <4> The complex formation reactions of the Ca2 + ion with the hydronium. <5> The protonation reaction of the fluoride anion.
Example Output:
5