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 tRNA-aminoacyl-transferases: 
 Options:  <1> They link the amino acid to the ribosome. <2> They bind the amino acid to the anticodon of the tRNA. <3> They are RNA polymerases. <4> They guarantee the fidelity of the translation. <5> They are not important in the translation.
Example Output: 4

Example Input: Question: Indicate which of the following statements is true about bilirubin: 
 Options:  <1> It is a catabolic product of the heme group. <2> It is a product of the urea cycle. <3> It is an intermediary of the Krebs cycle. <4> It is a precursor of hepatic gluconeogenesis. <5> It is a product of cholesterol degradation.
Example Output: 1

Example Input: Question: When a person is affected by a major stressful event or many minor stressful daily events, your body can react by showing up in the target organs by the action of: 
 Options:  <1> Autonomic neural axis producing prolonged effects. <2> Peripheral neural axis producing intermediate effects. <3> Neuroendocrine axis stimulating the adrenal medulla and producing immediate effects. <4> Hypothalamus <5> Endocrine axis on the spinal cord.
Example Output:
4