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
"Malta" fever is caused by: 
Select and explain. 
A. Treponema, B. Borellia, C. Brucella, D. Pseudomonas
C: Brucella
Answer: C: Brucella 
Explanation: Brucella