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
Adenosine deaminase In CSF Is significantly higher In 
Select and explain. 
A. Tuberculous meningitis, B. BacteriaI meningitis, C. Viral meningitis, D. Syphilitic meningitis
A: Tuberculous meningitis
Answer: A: Tuberculous meningitis 
Explanation: Tuberculous meningitis (TBM) is the most common form of central nervous system tuberculosis (TB) and has very high morbidity and moality. TBM is typically a subacute disease with symptoms that may persist for weeks before diagnosis Ref Harrison20th edition pg 2456