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: The alkaline error is defined as: 
 Options:  <1> Error that is committed when a strong base is valued. <2> Error that presents a glass electrode when the medium is very basic. <3> Error that is committed when a strong acid is valued. <4> Error affecting a reference electrode. <5> Own error of liquid membrane electrodes.
Example Output: 2

Example Input: Question: The differential modification of RNA: 
 Options:  <1> It can result in multiple products from one gene. <2> It occurs thanks to the transcription bubble. <3> It is catalyzed by RNA polymerase I. <4> It is catalyzed by RNA polymerase II. <5> It is catalyzed by RNA polymerase III.
Example Output: 1

Example Input: Question: A patient consulted for recent and progressive development of acropachies and general deterioration. The search for possible underlying neoplasia begins. Which of the following tumors is more likely to be diagnosed? 
 Options:  <1> Gastric adenocarcinoma. <2> Esophageal epidermoid. <3> Mediastinal thymoma. <4> Follicular thyroid. <5> Pleural mesothelioma.
Example Output:
5