The correct option is A Damage to the lungs
Chronic obstructive pulmonary disease (COPD), also known as chronic obstructive lung disease (COLD), is a type of obstructive lung disease characterized by chronically poor airflow. It worsens over time. The main symptoms include shortness of breath, cough, and sputum production. It is divided into emphysema and chronic bronchitis. COPD is almost always caused by smoking. Over time, breathing tobacco smoke irritates the airways and destroys the stretchy fibres in the lungs.