(Solved): 16. An 18-year-old man who began an intensive weight-lifting program 6 months ago comes to the phys ...

16. An 18-year-old man who began an intensive weight-lifting program 6 months ago comes to the physician for a routine examination. He says that he does not take any medications, but he appears uneasy during this part of the interview. Physical examination shows comedones and pustules on the face and upper back, defined bulky muscular development of the upper arms and thighs, and mild gynecomastia. Genital examination shows mild testicular atrophy. Which of the following drugs or supplements is the most likely cause of this patient's condition? A) Clenbuterol B) Creatine C) Ephedrine D) Human growth hormone E) Nandrolone F) Prednisone