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: Gynaecology & Obstetrics
In a neonate with meningitis, Gram-positive bacilli were isolated on CSF examination. Which of the following is the likely causative organism? 
Select and explain. 
A. Streptococcus pneumoniae, B. Listeria monocytogenes, C. Hemophilus influenzae, D. Neisseria meningitides
B: Listeria monocytogenes
Answer: B: Listeria monocytogenes 
Explanation: Ans. b. Listeria monocytogenes