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: One of the signs that can appear in the postoperative period is tympanism, which means: 
 Options:  <1> Paralysis of intestinal peristalsis. <2> Tympanic perforation due to increased pressure. <3> Evisceration <4> Retention of gases in the intestine. <5> Severe abdominal pain.

Output: 4


Input: Consider Input: Question: A primary standard solution in a titration should not: 
 Options:  <1> Be prepared from a high purity reagent. <2> Have an exactly known concentration. <3> Keep your composition over time. <4> React instantly. <5> Give rise to secondary reactions.

Output: 5


Input: Consider Input: Question: The molar absorption coefficient of a compound: 
 Options:  <1> It has dimensions of M-1 cm-1, it is constant at a specific wavelength and in a particular solvent. <2> Its dimensions are mol L-1 cm-2 and it is constant at a given wavelength and in a given solvent. <3> It has dimensions L mol-1 cm-3 and is constant throughout the spectral region and is not influenced by the solvent. <4> Its dimensions are Photons per mole and it varies with the wavelength and with the solvent. <5> It is dimensionless, constant and does not vary with the wavelength or with the solvent.


Output: 1