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: In general, water intake should be increased in patients undergoing chemotherapy with the aim of: 
 Options:  <1> Prevent kidney damage. <2> Fluidify bronchial secretions. <3> Relieve post-chemotherapy nausea. <4> Increase the volume. <5> Decrease the risk of infection.
Example Output: 1

Example Input: Question: The differential modification of RNA: 
 Options:  <1> It can result in multiple products from one gene. <2> It occurs thanks to the transcription bubble. <3> It is catalyzed by RNA polymerase I. <4> It is catalyzed by RNA polymerase II. <5> It is catalyzed by RNA polymerase III.
Example Output: 1

Example Input: Question: Antegrade amnesia is a result of brain damage in: 
 Options:  <1> The hippocampus, its afferents or eferences. <2> The hypothalamus, its afferences or eferences. <3> The thalamus, its afferences or eferences. <4> The pituitary gland, its afferences or eferences. <5> The orbitofrontal cortex, its afferents or eferences.
Example Output:
1