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: Question: A 13-year-old girl is operated on due to Hirschsprung illness at 3 months of age. Which of the following tumors is more likely to be present? 
 Options: <1> Abdominal neuroblastoma <2> Wilms tumor <3> Mesoblastic nephroma <4> Familial thyroid medullary carcinoma.
Example solution: 2
Example explanation: The answer to the given question should be a tumor, therefore Wilms tumor is the correct answer for the given question.

Problem: Question: The reaction of 5-Decino with sodium in ammonia and tert-butanol produces: 
 Options:  <1> Dean. <2> cis-5-Decene. <3> 5-Decanamin. <4> trans-5-Decene. <5> 5,6-Decanodiamine.

Solution: 4