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: The antitussive dextromethorphan is an enantiomer of the O-methylated derivative of levorphanol that belongs to the structural family of: 
 Options:  <1> 6,7-Benzomorpanos. <2> Morfinanos. <3> 4-Phenylpiperidines. <4> Phenylpropalamine. <5> Oripavinas.

Output: 2


Input: Consider Input: Question: A 65-year-old man with a history of pancreatic cancer undergoing chemotherapy. Emergency consultation for pain and edema of the entire lower limb from the groin. Which diagnostic test is more cost-effective to confirm the diagnostic suspicion? 
 Options:  <1> Dimer D. <2> Magnetic resonance. <3> Phlebography <4> Venous Doppler ultrasound. <5> Helical CT

Output: 4


Input: Consider Input: Question: In a 29-year-old woman the following parameters are in the course of a routine analysis: Hb 11.5 g / dL, VCM 70 fl, HCM 28 pg, Ferritin 10 ng / mL, leukocytes 5,200 / mm3, platelets 335,000 / mm3. Physical examination is normal. The most indicated exploration in this situation is: 
 Options:  <1> Gynecological exploration. <2> Study of occult blood in stool. <3> Radiological study of the digestive system. <4> Electrophoresis of hemoglobins. <5> Test of Coombs.


Output: 1