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'.

Input: Consider Input: Question: What amino acids can be bound to a sugar by an O-glycosidic bond? 
 Options:  <1> Ser and Thr. <2> Cys and Ser. <3> Asn and Thr. <4> Lys and His. <5> Val and Leu.

Output: 1


Input: Consider Input: Question: Diabetic ketoacidosis (DKA) causes disorders of the metabolism of carbohydrates, proteins and lipids. The main clinical manifestations of CAD are: 
 Options:  <1> Hypoglycaemia, dehydration with loss of electrolytes and acidosis. <2> Hyperglycemia, dehydration with loss of electrolytes and alkalosis. <3> Hypoglycaemia, increases in volemia and acidosis. <4> Hyperglycemia, dehydration with loss of electrolytes and acidosis. <5> Hyperglycemia, increases in blood volume and alkalosis.

Output: 4


Input: Consider Input: Question: The first morphological sign of human gastrulation is: 
 Options:  <1> Formation of the neural tube. <2> Formation of the primitive line. <3> Implantation. <4> Compaction <5> Ovulation.


Output: 2