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: Of the following pairs of surface molecules, what is used by the virgin T lymphocytes to extravasate to the lymph node? 
 Options:  <1> CCR7 and L-selectin. <2> VCAM and L-selectin. <3> CCR7 and ICAM-1. <4> CCR9 and L-selectin. <5> CCR4 and VCAM-1.
Example Output: 1

Example Input: Question: Graphite is a conductor because: 
 Options:  <1> The valence band has electronic vacancies. <2> The driving band has electronic vacancies. <3> Both bands have electronic vacancies. <4> The banned band is very big. <5> The band gap is zero.
Example Output: 5

Example Input: Question: Which of the following alterations is found within the alterations of the corporal conscience? 
 Options:  <1> Twilight state. <2> Asthenic-apathetic stadium. <3> Hypnotic dissociation. <4> Astereognosia <5> Automatism.
Example Output:
4