This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: C.N.S, Subject name: Medicine
A 45 year old female is diagnosed as a case of pneumococcal meningitis.Her blood sample were sent for culture sensitivity. In the mean time best drug to sta as an empirical treatment is 
Select and explain. 
A. Penicillin G, B. Doxycycline, C. Streptomycin, D. Vancomyin + Ceftriaxone
D: Vancomyin + Ceftriaxone
Answer: D: Vancomyin + Ceftriaxone 
Explanation: Harrison's textbook of internal medicine 17th edition . *Treatment of choice for pneumococcal meningitis is cetriaxone (2g q 12h) plus vancomycin (1g q 12h).