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: ADH increases the osmolality of the renal interstitial medium because it increases: 
 Options:  <1> The permeability to urea in the collector tube. <2> The water permeability of the ascending loop of Henle. <3> The flow in the straight vessels. <4> The reabsorption of NaCl in the collecting tubule. <5> The renal excretion of water.
[A]: 1


[Q]: Question: Isopropyl alcohol is prepared from petroleum by hydration of: 
 Options:  <1> Isobutene <2> Eteno <3> Penteno <4> Buteno. <5> Propene
[A]: 5


[Q]: Question: The O antigen used in the classification of Gram negative bacteria corresponds to: 
 Options:  <1> The flagellar proteins. <2> Components of the capsule. <3> The peptidoglycan. <4> The polysaccharide of lipopolysaccharides. <5> Plasma membrane proteins.
[A]:
4