<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 56-year-old man comes to the physician because of chest pain and shortness of breath for 3 days. The pain is present at rest and worsens with deep inspiration. His temperature is 37.2C 99F, pulse is 102min, respirations are 23min, and blood pressure is 13588 mm Hg. Examination shows decreased breath sounds at the left lower lobe. Laboratory studies show:Hematocrit 42Leukocyte count 6,500μLSerumFasting glucose 90 mgdLLactate dehydrogenase 75 ULTotal protein 7.2 gdLAn x-ray of the chest shows a small left-sided pleural effusion but no other abnormalities. A diagnostic thoracentesis is performed and 100 mL of bloody fluid are aspirated from the left pleural space. Pleural fluid analysis shows a lactate dehydrogenase of 65 UL and a total protein of 5.1 gdL. Pleural fluid cytology shows normal cell morphology. Further evaluation of this patient is most likely to show a history of which of the following?? A: Oropharyngeal dysphagia, B: Infliximab use, C: Prolonged immobilization, D: Congestive heart failure, E: Asbestos exposure,  <response>: This is a clinical vignette describing a 56-year-old man with chest pain, shortness of breath, decreased breath sounds, and a small pleural effusion. The key findings are a unilateral pleural effusion that is bloody but shows normal cytology. The differential diagnosis for a unilateral pleural effusion includes congestive heart failure, pneumonia, pulmonary embolism, malignancy, and other causes. However, the bloody fluid and normal cytology make malignancy less likely. Prolonged immobilization can lead to atelectasis and pleural effusion. The bloody effusion suggests minor trauma to the pleura from inadequate lung expansion due to immobilization. Of the choices given, prolonged immobilization best fits the clinical findings.C: Prolonged immobilization 