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'.

Example Input: Question: Which of these equalities is INCORRECT? 
 Options:  <1> Decil 1 = Centil 10. <2> Quartile 1 = Percentile 25. <3> Quartil 2 = Centil 20. <4> Decil 5 = Medium. <5> Quartile 3 = Centil 75.
Example Output: 3

Example Input: Question: Liquid chromatography in normal phase: 
 Options:  <1> It uses a column with apolar groups that interact with the apolar part of the analytes differentially. <2> It is a mode of operation that employs a polar stationary phase with a low polarity mobile phase. <3> It uses highly polar mobile phases such as alkanes or chloroalkanes. <4> It is a mode of operation that employs a non-polar surface with a mixed aqueous / organic mobile phase. <5> It uses stationary phases with a large number of hydrophobic alkyl ligands.
Example Output: 2

Example Input: 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.
Example Output:
3