What is the most common CNS fungal infection in AIDS patients, and how do you diagnose and treat it?

a) Coccidioidomycosis; Diagnosis with serum antibody testing; Treatment with amphotericin B
b) Cryptococcal meningitis; Diagnosis with cerebrospinal fluid (CSF) analysis; Treatment with amphotericin B and flucytosine
c) Aspergillosis; Diagnosis with sputum culture; Treatment with voriconazole
d) Histoplasmosis; Diagnosis with urine antigen testing; Treatment with itraconazole