<prompt> A CSFserum glucose ratio of 0.4 is highly suggestive of:Bacterial MeningitisViral MeningitisCarcinomatous MeningitisNone of the above  <response>: a. Bacterial MeningitisRef: Nelsons 20e p 2936-2948, Ghai 8e p 563-565Hypoglycorrhachia Low CSF: serum glucose ratio is commonly seen in Bacterial meningitis. 