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: 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 start 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: None