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: Pharmacology
The treatment of contacts of meningococcal meningitis is by- 
Select and explain. 
A. Rifampicin, B. Erythromycin, C. Penicillin, D. Cephalosporins
A: Rifampicin
Answer: A: Rifampicin 
Explanation: Ans. is 'a' i,e., Rifampicin