53-year-old woman recently diagnosed with hyperthyroldism started an appropriate treatment. One month later, the following laboratory values were obtained: Red blood cell count (RBC): 4.6 × 10mm3 (normal 4.0-5.5 × 10°/mm3), White blood cell count (WBC): 0.6 × 103/mm.3 (normal 3.2-9,8 × 10%/mm3), Platelets 180 x 103/mm3 (normal
140-400 × 10%/mm*). Which of the following drugs most likely caused these results?