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: How many palindromic sequences exist on the human Y chromosome that allow Y-Y recombination ?: 
 Options:  <1> 8 <2> 6 <3> Four. <4> 10 <5> 12
Example Output: 1

Example Input: Question: When performing a central peripheral insertion venous catheterization procedure, the nurse must take into account that: 
 Options:  <1> The catheter is ready for use immediately after insertion, not needing further checks. <2> It is vital to perform a chest X-ray and / or an electrocardiographic record prior to its use. <3> A complete electrocardiogram should be performed in order to avoid possible complications. <4> The location of the tip of the catheter is only checked if parenteral nutrition is to be administered through it. <5> You need to check your position using a chest x-ray and another abdomen.
Example Output: 2

Example Input: Question: The vector of tularemia is a / a: 
 Options:  <1> Coleoptera. <2> Louse. <3> Flea. <4> Tick. <5> Mosquito.
Example Output:
4