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: What is cardiac output? 
 Options:  <1> The volume of blood that leaves the heart per unit of time (ml / min or l / min). <2> The complete heartbeat constituted by contraction (systole) and relaxation (diastole) in both atria and in both ventricles measured in time (sec). <3> The blood that remains in the heart when the pressure gradient determines the distension of the cardiac fibers. <4> The power gradient of the contraction, also called contractility. <5> The ventricular volume that remains constant.
Example Output: 1

Example Input: Question: Which amino acid serves as a starting point for the synthesis of porphyrins (heme group)? 
 Options:  <1> Valina <2> To the girl. <3> Asparagine <4> Lysine <5> Glycine
Example Output: 5

Example Input: Question: When training in self-instruction is done in young children, which of the following indications may NOT help the success of the training? 
 Options:  <1> Begin training with play activities. <2> Work with two children. <3> Use imagination techniques. <4> Encourage the child to memorize and mechanically use the self-instructions. <5> Combine with reinforcement techniques.
Example Output:
4