This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: FMGE 2018, Subject name: Microbiology
Which of the following is the most likely cause in a case of granuloma? 
Select and explain. 
A. Cat scratch disease, B. Trench fever, C. Leprosy, D. Syphilis
A: Cat scratch disease
Answer: A: Cat scratch disease 
Explanation: Various granulomatous diseases and their causitive agents. Tubeculosis -Mycobacterium tuberculosis Leprosy -Mycobacterium Leprae Syphilis -Treponema palidium Cat-scratch disease - Baonella henselae (Gram-negative bacillus) Crohn disease (inflammatory bowel disease)- Immune reaction against intestinal bacteria, possibly self antigens