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: Which of the following conditions causes a decrease in the O2 saturation of the hemoglobin that is not due to a decrease in the partial pressure of oxygen? 
 Options:  <1> Ventilation-perfusion ratio lower than normal. <2> Anemia. <3> Carbon monoxide poisoning. <4> Hypoventilation. <5> Shunt venoarterial.

Output: 3


Input: Consider Input: Question: With regard to pyrogens and biotechnological medicines, it is possible to say: 
 Options:  <1> They have no tendency to aggregate or form large units with high molecular weight. <2> Ion exchange chromatography procedures (using their positive charge) can reduce endotoxin levels. <3> Ion exchange chromatography procedures (using their negative charge) can reduce endotoxin levels. <4> Ion exchange chromatography procedures (regardless of their charge) can reduce endotoxin levels. <5> They are unstable under standard autoclaving conditions.

Output: 3


Input: Consider Input: Question: A patient goes to a hospital emergency department presenting frank hematemesis. In the initial assessment the patient is pale and sweaty, has a heart rate of 110 beats per minute and a systolic blood pressure of 98 mmHg. Which of the following actions would NOT be performed in the initial care of this patient? 
 Options:  <1> Ensure adequate oxygenation of the patient. <2> Channel two heavy gauge peripheral routes. <3> Use the hematocrit as an index of blood loss. <4> Replace the blood volume with crystalloid solutions. <5> Place a nasogastric tube.


Output: 3