This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Pathology
Malignant pustules occurs in: 
Select and explain. 
A. Anthrax infection, B. Epithelioma, C. Melanoma, D. Tetanus
A: Anthrax infection
Answer: A: Anthrax infection 
Explanation: Pulmonary anthrax (wool-sorters’ disease):
Occurs due to inhalation of spores of B. anthracis in infectious aerosols results in rapid development of malignant pustule in the bronchus. 
This is followed by development of primary extensive necrotising pneumonia and haemorrhagic mediastinitis which is invariably fatal.
Mohan H. Textbook of pathology. Jaypee Brothers Medical Publishers; 2015. Edition 7. Page 169