You are answering a USMLE-style medical question. Question: A 45-year-old man presents to the doctor’s office with shortness of breath, cough, and fatigue for 3 days. This has been progressively worsening. He has a medical history significant for chronic obstructive pulmonary disease and osteoarthritis. He takes albuterol, ipratropium and aspirin. He smoked 2 and a half packs per day, and had done so for the past 26 years. After ceasing tobacco use for 1 year, he has recently begun smoking again. The blood pressure is 138/88 mm Hg, the respiratory rate is 12/min, the heart rate is 76/min, and the pulse oximetry is 87% on room air. On physical examination, the patient appears disoriented and is only somewhat comprehensible. The pupils are equal, round, and reactive to light with extraocular movements intact. Cranial nerves VII-XII also intact. The auscultation of the heart is absent of murmur, rubs, or gallops. The auscultation of the lungs demonstrate audible rales in the bases bilaterally. Which of the stages of change is the patient currently experiencing based on the clinical vignette? Options: A) Precontemplation B) Contemplation C) Maintenance D) Relapse Reply with ONLY the letter of the correct answer (A, B, C, or D). No explanation.