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: A 75-year-old man who reported decreased visual acuity in his right eye of two weeks of evolution. In the fundus examination, soft drusen and serous detachment at the level of the macula are seen. What treatment is currently the most indicated for this disease? 
 Options:  <1> Focal photocoagulation with laser. <2> Photodynamic therapy. <3> Intravitreal injections of anti-angiogenic drugs. <4> Posterior vitrectomy. <5> Observation.
Example Output: 3

Example Input: Question: A homogeneous reaction between ideal gases that has reached chemical equilibrium can evolve (ie, move towards the formation of more reactants or products) in the following way if this equilibrium is altered: 
 Options:  <1> If the temperature is increased at constant pressure, it will go to where more moles will be produced. <2> If the pressure is increased to constant temperature it will go to where the volume is higher. <3> If an inert gas is added it will go to where this gas is consumed. <4> If a gas that participates in the reaction is added, it will go to where more gas is produced. <5> If the temperature is decreased, it will go to where the reaction is exothermic.
Example Output: 5

Example Input: Question: Which of the enzymes contains manganese? 
 Options:  <1> Glutathione S-transferase. <2> Glutathione reductase. <3> Peroxidated glutathione. <4> Superoxide dismutase. <5> Catalase
Example Output:
4