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: Which of the following characteristics defines an endogenous depression?
Options: <1> Its course is continuous. <2> There is an evening worsening. <3> There is an early awakening. <4> There is a good response to placebo. <5> A neurotic personality intervenes in the etiopathogenesis.
Example Output: 3

Example Input: Question: What percentage of the bicarbonate filtered in the glomerulus is reabsorbed under normal conditions along the nephron and in which segment is most of this reabsorption produced ?:
Options: <1> It is reabsorbed almost 100%, mostly in the collector duct. <2> Approximately 50% is reabsorbed, mostly in the proximal convoluted tubule. <3> Approximately 50% is reabsorbed, mostly in the distal convoluted tubule. <4> Less than 20% is reabsorbed, mostly in the collecting duct. <5> It is almost 100% reabsorbed, mostly in the proximal convoluted tubule.
Example Output: 5

Example Input: Question: What WISC IV tests are part of the perceptual reasoning index ?:
Options: <1> Search for symbols, cubes and digits. <2> Matrices, cubes and concepts. <3> Search for symbols, letters and numbers, and concepts. <4> Matrices, keys and concepts. <5> Cubes, letters and numbers, and concepts.
Example Output:
2