A 28-year-old woman having limited cutaneous scleroderma for the last 10 years complains of shortness of breath for last one month. Pulmonary function tests (PFT) are as follow -What is the most likely diagnosis in this case?: (A) Interstitial lung disease, (B) Pulmonary artery hypertension, (C) Congestive heart failure, (D) Bronchiectasis
Answer is B. None