Definition: 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: Question: The surgical treatment of COPD, or lung volume reduction surgery, is currently a therapeutic weapon more within the multidisciplinary treatment of it. Which of the following statements is correct?
Options: <1> The indication for surgical treatment will be in those patients who have moderate / severe congestive heart failure at the same time. <2> The presence of a pulmonary artery systolic pressure lower than 45 is an absolute contraindication. <3> COPD with emphysematous predominance in lower and middle lobes associated with pleural pathology is associated with better results. <4> The presence of a diffuse distribution of emphysema with FEV1> 20% and DLCO <20% are indicators of good prognosis. <5> Pre-surgical rehabilitation along with the distribution of emphysema in the upper lobes and the ability to perform postoperative physical exercise makes the results of the surgery beneficial.
Output:
5