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: Microbiology
Hebra nose is caused by: 
Select and explain. 
A. Frisch bacillus, B. Staph aureus, C. Pseudomonas, D. C. diphtheriae
A: Frisch bacillus
Answer: A: Frisch bacillus 
Explanation: Ans. is. 'a' i. e., Frisch bacillus