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: 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.
Example Output: 1

Example Input: Question: Which of the following skin diseases is associated with celiac disease? 
 Options:  <1> Atopic dermatitis. <2> Dermatitis herpetiformis <3> Molluscum contagiosum. <4> Annular granuloma. <5> Rosacea
Example Output: 2

Example Input: Question: The DiGeorge syndrome is linked to: 
 Options:  <1> A defective development of the thymus. <2> An alteration of the secondary lymphoid tissue. <3> An alteration of the M cells <4> A maturation defect of B lymphocytes <5> An alteration in the regulatory systems of the complement.
Example Output:
1