dx? daily chronic cough w/ thick, mucopurulent, foul-smelling sputum, hemoptysis, CT showing airway dilation, lack of tapering of bronchi, bronchial wall thicking "tram-track" appearance, signet ring sign, and PFT showing obstructive pattern (FEV1/FVC <70%).
A. Asbestosis
B. Coal workers' pneumoconiosis
C. Silicosis
D. Berylliosis