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 palindromic sequences exist on the human Y chromosome that allow Y-Y recombination ?: 
 Options:  <1> 8 <2> 6 <3> Four. <4> 10 <5> 12

A: 1
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Q: Question: In animals, where is most of the extracellular material components synthesized ?: 
 Options:  <1> In the smooth endoplasmic reticulum. <2> In the rough endoplasmic reticulum. <3> In the extracellular layer itself. <4> In the plasma membrane. <5> In the cytoplasm of the cell.

A: 2
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Q: Question: The alkali halides, MX: 
 Options:  <1> They are solids that melt below 100ºC. <2> They form crystals of intense colors. <3> They can be obtained by reaction of the M2CO3 carbonates with the aqueous solutions of the HX hydrogen halides. <4> None of them can be found in nature. <5> They are liquid at room temperature.

A:
3
****