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 is the pigmented and highly vascularized layer of the posterior wall of the eyeball called? 
 Options:  <1> Iris. <2> Choroid <3> Ciliary body. <4> Sclera <5> Retina.
Example Output: 2

Example Input: Question: For classical automaticity theories, what characterizes automatic versus controlled processes ?: 
 Options:  <1> The automatic processes are under control of the person's intentions. <2> Automatic processes consume great attentional capacity. <3> Automatic processes process information only sequentially. <4> Automatic processes consume a lot of time. <5> Automatic processes do not have to access conscious knowledge.
Example Output: 5

Example Input: Question: The reactivation of a latent cytomegalovirus in an immunosuppressed patient can lead to a severe systemic picture. How would the ethological diagnosis? 
 Options:  <1> Detecting the specific IgG in the serum. <2> By urine culture in an advanced cell line. <3> By chain reaction of quantitative polymerase in the blood. <4> By detection of antigen in the urine. <5> By detection of specific IgM in the serum.
Example Output:
3