You are answering a USMLE-style medical question. Question: A 22-year-old woman with a history of asthma visits her physician for worsening shortness of breath. She states that she feels as though her “lungs are falling apart,” noting that her lung function has been steadily deteriorating. She further states that she has visited a number of other physicians who prescribed several different types of inhalers, but she feels that they have not helped her control her asthma exacerbations. She has experienced 4 episodes of pneumonia in the last 3 years and often suffers from “random” bouts of excessive coughing and wheezing. When asked if her coughing episodes produce sputum, she states, “Yes, the stuff is greenish with specks of red in it.” She also states that her coughing and wheezing episodes are associated with fever, malaise, and occasional expectoration of brown mucous plugs. The vital signs include: blood pressure 122/70 mm Hg, pulse 66/min, respiratory rate 26/min, and temperature 37.0°C (98.6°F). On physical exam, the patient appears frail-looking and in moderate respiratory distress. Auscultation reveals inspiratory crackles in the right lung base and coarse breath sounds in the bilateral upper lung lobes. Chest radiograph, as shown below, reveals atelectasis in the right lung base. There are also branched radiodensities that the radiologist notes as being “glove-finger shadows” (noted by the arrow in the image). Serum immunoglobulin E (IgE) levels are elevated. Which of the following is the most appropriate therapy in this patient? Options: A) Isoniazid B) Fluconazole C) Caspofungin D) Prednisone Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.