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'.

Q: Question: The Müller cells of the retina are: 
 Options:  <1> Modified neurons. <2> Glandular <3> Neurogliales of support. <4> Of the microglia. <5> Of the pigmentary layer.

A: 3
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Q: 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.

A: 3
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Q: Question: Which of the following changes is the most potent stimulus for glucagon secretion? 
 Options:  <1> Gastric filling <2> Hyperglycemia <3> Hypernatremia <4> Pass from chyme to duodenum. <5> Hypoglycemia

A:
5
****