This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Drug used in prophylaxis of H. Influenza is 
Select and explain. 
A. Doxycycline, B. Rifampicin, C. Erythromycin, D. None
B: Rifampicin
Answer: B: Rifampicin 
Explanation: Rifampicin is drug of choice for prophylaxis of Meningococcal meningitis. H. Influenza meningitis Refer Harrison 19th/205