Review Question - QID 212868

A 54-year-old man presents to his primary care physician with a 2-week history of increasing fatigue and shortness of breath. He says that he has also noticed some swelling in his legs as well as changes in his urine, which now appears frothy. Physical exam is significant for periorbital and lower extremity edema. Laboratory testing is significant for hypoalbuminemia and urinalysis demonstrates 4+ protein. Given these findings, a kidney biopsy is obtained and histology is shown in Figure A. Which of the following treatments would most likely be effective for this patient?