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: Surgery
Malignant pustule occurs in ? 
Select and explain. 
A. Melanoma, B. Gas gangrene, C. Ovarian tumour, D. Anthrax
D: Anthrax
Answer: D: Anthrax 
Explanation: Ans. is 'd' i.e., Anthrax