The correct option is D All of the above
Emphysema is a form of chronic lung disease, usually caused by smoking.
Bronchitis is caused by tobacco smoke, dust, fumes, vapors and air pollution.
Gastric and duodenal ulcers that occur in the stomach are called as gastric ulcers. Ulcers that occur in the upper area of small intestine, which is the duodenal ulcers.
Therefore, the correct answer is option D.