<prompt> Please answer with one of the option in the bracket. Write reasoning in between . Write answer in between .Q:A 16-year-old girl is brought to the physician for recurrent episodes of shortness of breath, nonproductive cough, and chest tightness for 3 months. These episodes occur especially while playing sports and resolve spontaneously with rest. She appears healthy. Her pulse is 63min, respirations are 15min, and blood pressure is 10270 mm Hg. Pulse oximetry on room air shows an oxygen saturation of 98. Physical examination shows no abnormalities. An x-ray of the chest shows no abnormalities. Spirometry shows a FEV1:FVC ratio of 85 and a FEV1of 85 of predicted. Which of the following is the most appropriate next step in management?? A: CT scan of the chest, B: Albuterol before exercise, C: Prednisone therapy, D: Genetic testing, E: Echocardiography,  <response>: This is a clinical case scenario about a 16-year-old girl with recurrent episodes of shortness of breath, cough, and chest tightness triggered by exercise. The key findings are normal vital signs, oxygen saturation, chest x-ray, and physical exam. Spirometry shows mild obstruction. The recurrent nature triggered by exercise suggests exercise-induced bronchospasm. The normal oxygen saturation and lack of other concerning findings make lungheart disease less likely. Albuterol is a bronchodilator that can help relieve bronchospasm. Therefore, trying albuterol before exercise is the most appropriate next step. CT chest, steroids, genetic testing, and echocardiography are not indicated at this point.B: Albuterol before exercise 