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: How many pairs of spinal nerves are connected to the spinal cord? 
 Options:  <1> Twenty eight. <2> Twenty nine. <3> Thirty one. <4> Thirty-three. <5> Thirty-five.
[A]: 3


[Q]: Question: Diabetic ketoacidosis (DKA) causes disorders of the metabolism of carbohydrates, proteins and lipids. The main clinical manifestations of CAD are: 
 Options:  <1> Hypoglycaemia, dehydration with loss of electrolytes and acidosis. <2> Hyperglycemia, dehydration with loss of electrolytes and alkalosis. <3> Hypoglycaemia, increases in volemia and acidosis. <4> Hyperglycemia, dehydration with loss of electrolytes and acidosis. <5> Hyperglycemia, increases in blood volume and alkalosis.
[A]: 4


[Q]: Question: On the thick ascending branch of the loop of Henle: 
 Options:  <1> Water is reabsorbed. <2> The tubular liquid is diluted. <3> Water reabsorption depends on ADH. <4> The reabsorption of urea depends on ADH. <5> Aldosterone stimulates Na + reabsorption.
[A]:
2