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: Reactivity is considered a source of error when using Observation as a method of obtaining information. Where does it come from? 
 Options:  <1> From the context in which the Observation is generated. <2> Of the observed subject. <3> Of the chosen procedure. <4> From the observer. <5> Of the type of instrument chosen.

Ex Output:
2


Ex Input:
Question: Which of these foods should reduce a patient with high cholesterol from his diet? 
 Options:  <1> Cereals. <2> Vegetables. <3> Whole milk. <4> Olive oil. <5> Fish.

Ex Output:
3


Ex Input:
Question: Indicate which of the following safety precautions used in the care of the patient receiving brachytherapy is NOT true: 
 Options:  <1> Single room. <2> Prohibition of visits of children. <3> Radiation meters for health personnel. <4> Reverse isolation. <5> Limitation of the time of the visits.

Ex Output:

4