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'.

Ex Input:
Question: With what scope is the Theory of the Melzack Gate and Wall related ?: 
 Options:  <1> Cancer. <2> HIV infection <3> Renal problems. <4> Pain. <5> Cardiovascular disorders

Ex Output:
4


Ex Input:
Question: The only autonomic adrenergic fibers are axons of neurons: 
 Options:  <1> Sympathetic preganglions. <2> Postganglionic sympathetics. <3> Preganglionic parasympathetic. <4> Postganglionic parasympathetic. <5> Parasympathetic ganglion.

Ex Output:
2


Ex Input:
Question: What type of amino acid side chains will compete with saline ions for solvation water ?: 
 Options:  <1> Apolares. <2> Aliphatic <3> Aromatic <4> Polar <5> Without charge.

Ex Output:

4