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: The proteasome:
Options: <1> It is formed by 21 homologous subunits organized in 3 rings. <2> It is a protein complex that catalyzes the hydrolysis of ubiquitinated proteins. <3> It is found only in animal eukaryotic cells. <4> Digest acylated proteins. <5> It is activated by a drug, bertezomil, in therapy for multiple myeloma.
Example Output: 2

Example Input: Question: On the link between the nitrogenous base and the ribose of the nucleotides:
Options: <1> The anomeric carbon of ribose is in alpha configuration. <2> It is an N-glycosidic bond. <3> It involves the C5' of the ribose. <4> It involves phosphate groups. <5> It is of a different nature for each nitrogenous base.
Example Output: 2

Example Input: Question: What procedure is part of the cognitive-behavioral intervention program for hypochondria proposed by Warwick and Salkovskis ?:
Options: <1> The systematic desensitization in imagination to extinguish the fear of interoceptive sensations. <2> The stopping of thought to block intrusive thoughts about the disease. <3> The training in mindfulness to reduce the appearance of annoying bodily sensations. <4> The prevention of response to reduce body checking behaviors and search for reassuring information. <5> The resolution of the underlying conflicts related to guilt and dependency needs.
Example Output:
4