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: If you want to estimate the effects of an intervention, you will use: 
 Options:  <1> A transversal design. <2> A retrospective design <3> An ecological study. <4> A randomized clinical trial. <5> An observational design with random selection of the participants.
Example Output: 4

Example Input: Question: People affected by chronic heart failure usually present the diagnosis of nursing Intolerance to activity related to: 
 Options:  <1> Fear, because it is a situation that poses a potential risk to life. <2> Imbalance between the supply and oxygen demand due to the decrease in myocardial contractility. <3> Excess fluid volume due to interruption of blood flow. <4> Poor knowledge about the disease and treatment with diuretics. <5> Infection due to decreased immune response.
Example Output: 2

Example Input: Question: Regarding the definition of chronic kidney disease, one is INCORRECT: 
 Options:  <1> It requires persistent presence of structural or functional alterations of the kidney for at least 2 months. <2> It includes alterations in urine as proteinuria, independently of the glomerular filtration rate (GFR). <3> It includes a lower GFR of 60 ml / min / 1.73m2 of body surface regardless of the presence or absence of other markers of kidney damage. <4> It is classified into 5 stages according to the TFG. <5> The preparation for renal replacement therapy should be done in stage 4.
Example Output:
1