This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteriology, Subject name: Microbiology
[{'content': 'Most common cause of meningitis in renal transplant patients is \nSelect and explain. \nA. Listeria, B. Streptococcus, C. Neisseria, D. Legionella', 'role': 'user'}, {'content': 'Answer: A \nExplanation: Listeria monocytogenesDistinguishing Features* Small gram-positive rods* Beta-hemolytic, nonspore-forming rod on blood agar, CAMP positive* Tumbling motility in broth; actin jet motility in cells* Facultative intracellular parasite* Cold growth* Transplacental--granulomatosis infanti-septica* Neonatal septicemia and meningitis (third most common cause)* Meningitis in renal transplant or cancer patients (most common cause)Ref: Jawetz; 27th edition; Page no: 197', 'role': 'assistant'}]