You are answering a USMLE-style medical question. Question: A 33-year-old nurse is referred to an infectious disease specialist after she exhibited a PPD skin test with 17 mm of induration. She denies any cough, shortness of breath, hemoptysis, weight loss, fatigue, fevers, or night sweats over the last several months. Her temperature is 97.0°F (36.1°C), blood pressure is 120/81 mmHg, pulse is 82/min, respirations are 15/min, and oxygen saturation is 98% on room air. An initial chest radiograph is unremarkable. Which of the following is the most appropriate management of this patient? Options: A) Isoniazid B) No management indicated C) Repeat PPD in 1 week D) Rifampin, isoniazid, pyrazinamide, and ethambutol Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.