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 oxygen of the ethers as that of the alcohols can be protonated to generate: 
 Options:  <1> Iminium ion. <2> Alkaloxonium ions. <3> Peroxides <4> Piranos. <5> Enaminas
[A]: 2


[Q]: Question: Point out the INCORRECT response in relation to the primary prevention measures of skin cancer: 
 Options:  <1> Avoid sun exposure between 12 and 15 hours. <2> Application of sun creams with high sun protection index, 15 minutes before exposure. <3> Use photoprotection to increase the time of exposure to the sun. <4> Use sunglasses, hats and appropriate clothing, as well as awnings and umbrellas. <5> Do not expose babies to the sun or to those who are being treated with immunosuppressants.
[A]: 3


[Q]: Question: RNA polymerases are characterized by: 
 Options:  <1> Begin RNA synthesis without the need for primers. <2> Synthesize RNA in the 3 '-> 5' direction. <3> A lower error rate than DNA polymerases. <4> Incorporate ribonucleotides without the need for a mold. <5> Enter T instead of U.
[A]:
1