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'.

Ex Input:
Question: A 45-year-old patient with a moderate smoking habit, no drinker, no other history of interest who has been diagnosed with squamous carcinoma of the oropharynx cT1N2b. It is pending decision of treatment in committee. What infectious agent would you be interested in confusing before proposing the treatment? 
 Options:  <1> Helicobacter pylori. <2> Herpes Simplex virus type 2. <3> Human papilloma virus. <4> Epstein Barr virus. <5> Cytomegalovirus.

Ex Output:
3


Ex Input:
Question: The CD40 ligand molecule (CD40L or CD154) is expressed in: 
 Options:  <1> Virgin T lymphocytes. <2> Activated T lymphocytes <3> NK lymphocytes. <4> Virgin B lymphocytes. <5> B activated lymphocytes.

Ex Output:
2


Ex Input:
Question: What element plays a physiological role in the prevention of gastroesophageal reflux? 
 Options:  <1> Upper esophageal sphincter <2> Angle of His. <3> Hernia of Hiato. <4> Purkinje angle. <5> Pyloric sphincter

Ex Output:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
2


